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908 grams
4540 grams
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Quality at A1 Hotels
A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, th ...
Quality at A1 Hotels
A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, they have been concerned about the quality of service. The company has been giving the following survey to its clients after their stay:How would you rate the quality of your room? Select one. Good(G), Poor(P)How would you rate the quality of your food? Select one. Good(G), Poor(P)How would you rate the quality of your service? Select one. Good (G), Poor(P)Any customer who answered “Poor” to at least one of the three questions up above is considered to be “dissatisfied.” Traditionally, 40% of customers have been dissatisfied.A1 Hotels would like to study customer satisfaction. Therefore, 200 survey responses were recently chosen at random for analysis. The complete data set is in the file named Hotels.Managerial ReportPrepare a report (see below) for A1 Hotels that summarizes your assessment of customer satisfaction. Be sure to include the following seven items in your report.To summarize the data, compute the proportion of all clients thatAnswered “Poor” to room quality.Answered “Poor” to food quality.Answered “Poor” to service quality.Develop the 92% confidence interval for the proportion of all recent clients that were “dissatisfied.” What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to room quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to food quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to service quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Conduct a hypothesis test (using either the p-Value Approach or the Critical Value Approach) to determine if the proportion of all recent clients is more dissatisfied than the traditional level of dissatisfaction. Use α = 0.08. Do not forget to include the correctly worded hypotheses and show all the steps required to conduct the hypothesis test.What advice would you give to A1 Hotels based upon your analysis of the data? What is the magnitude of the issue? How can this study be improved?Write a report that adheres to the Written Assignment Requirements under the heading “Expectations for CSU-Global Written Assignments” found in the CSU-Global Guide to Writing and APA Requirements. As with all written assignments at CSU-Global, you should have in-text citations and a reference page. An example paper is provided in the MTH410 Guide to Writing with Statistics. (link provided at the bottom of the page)Submit your Excel file in addition to your report.Requirements:Paper must be written in third person.Your paper should be four to five pages in length (counting the title page and references page) and cite and integrate at least one credible outside source. The CSU-Global Library is a great place to find resources.Include a title page, introduction, body, conclusion, and a reference page.The introduction should describe or summarize the topic or problem. It might discuss the importance of the topic or how it affects you or society as a whole, or it might discuss or describe the unique terminology associated with the topic.The body of your paper should answer the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.The conclusion should summarize your thoughts about what you have determined from the data and your analysis, often with a broader personal or societal perspective in mind. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.Include any tables of data or calculations, calculated values, and/or graphs associated with this problem in the body of your assignment.Document formatting, citations, and style should conform to the CSU-Global Virtual Library CSU-Global Guide to Writing and APA: Introduction. A short summary containing much that you need to know about paper formatting, citations, and references is contained in the New Sample APA Paper. In addition, information in the CSU-Global Virtual Library under the Writing Center/APA Resources tab has many helpful areas (Writing Center, Writing Tips, Template & Examples/Papers & Essays, and others).
Need help with this 2 tes
Question 1
A(n) ________ occurs when ________ independent variable(s) have an effect in combinati ...
Need help with this 2 tes
Question 1
A(n) ________ occurs when ________ independent variable(s) have an effect in combination with one another.
interaction; two or more
interaction; two or less
main effect; two or more
main effect; two or less
2.5 points
Question 2
Interested
in the effects of different kinds of instruction on videogame
performance, Martin asks 30 college freshmen to each play an hour of
Ratchet and Klank. Participants are randomly assigned to one of three
instruction groups: (1) complete the tasks as quickly as possible, (2)
conserve as much health as possible (i.e., play more carefully), or (3)
find gold bolts (worth lots of money in equipment and ammunition). If
Martin averages the scores for each instruction group and then compares
them, any differences in the means of the instruction groups reflect:
individual differences in hand-eye coordination.
inherent differences in the ability of the college freshmen to play video games.
within-groups variance.
between-groups variance.
2.5 points
Question 3
Why can't a researcher just run multiple t tests when the independent variable has more than two levels?
As you run more statistical tests, it becomes harder and harder to reject the null hypothesis.
As you run more statistical tests, the probability that you will make a Type I error in one of the tests increases.
As you run more statistical tests, you lose degrees of freedom.
As you run more statistical tests, the probability that you will make a Type III error in one of those tests increases.
2.5 points
Question 4
________ is a term used to describe an independent variable in a study with more than one independent variable.
Interaction
Main effect
Effect
Factor
2.5 points
Question 5
(Table:
Coping with Pain) The cells of this study reflect an interaction
between coping style and cognitive strategy. Which statement best
describes the interaction?
People
using both distraction and sensation-monitoring cognitive strategies
were able to keep their hand in the ice water for longer than 60
seconds, on average.
People using a sensation-monitoring strategy were able to keep their hand in the ice water for longer.
People using a distraction strategy were able to keep their hand in the ice water for longer.
The
effect of cognitive strategy depended on the coping style of the
participant. Those with an avoiding coping style kept their hand in the
ice water longer when using a distraction strategy, but those with a
monitoring coping style kept their hand in the ice water longer when
using a sensation-monitoring strategy.
2.5 points
Question 6
A five-way ANOVA has:
five dependent variables and two independent variables.
one dependent variable and five independent variables.
one dependent variable and four independent variables.
five dependent variables and five independent variables.
2.5 points
Question 7
The F ratio is calculated by:
dividing a measure of within-groups variability by a measure of between-groups variability.
averaging the results from the t tests for all possible two-group comparisons.
dividing a measure of between-groups variability by a measure of within-groups variability.
initially squaring all the scores.
2.5 points
Question 8
According to Cohen's conventions, an R2 of 0.19 is considered to be a(n) ________ effect size.
small
medium
large
erroneous
2.5 points
Question 9
Given
a scale dependent variable and a nominal independent variable with
three or more levels, we could use a(n) ________ to analyze the data.
PRE test
z test
t test
ANOVA
2.5 points
Question 10
A researcher wants to statistically test whether gender affects math test scores. Which test should the researcher use?
one-way ANOVA
two-way ANOVA
three-way ANOVA
within-groups ANOVA
2.5 points
Question 11
In a two-way ANOVA, the researcher makes decisions regarding ________ null hypotheses.
three separate
two separate
three interdependent
two interdependent
2.5 points
Question 12
A
researcher wants to examine people's preference for pets by having 10
people act as “foster owners” for four different types of family pets:
dogs, cats, birds, and fish. The participants will foster each type of
pet for one week, and a scale measure will be used to assess preference.
What research design should be used?
one-way between-groups ANOVA
correlation
one-way within-groups ANOVA
paired-samples t tests
2.5 points
Question 13
The F ratio is a ratio of:
two (or more) sample means.
two variances.
sample means divided by sample variances.
two sum-of-squares estimates.
2.5 points
Question 14
A post-hoc test is warranted when:
the F is significant and there are more than two groups.
we fail to reject the null hypothesis in an ANOVA.
we reject the null hypothesis when performing an independent-groups t test.
we have an a priori prediction about which group means will differ.
2.5 points
Question 15
A hypothesis test with two nominal independent variables and a scale dependent variable is a:
one-way ANOVA.
two-way ANOVA.
two-groups t test.
two-groups z test.
2.5 points
Question 16
A within-groups ANOVA is used when we have ________ independent variable(s) with ________ levels.
1; more than 2
2; more than 2
1; less than 2
2; less than 2
2.5 points
Question 17
Which degrees of freedom value is unique to the one-way within-groups ANOVA?
between-groups
subjects
within-groups
total
2.5 points
Question 18
The Bonferroni, Scheffé, and Tukey are all examples of:
hypothesis tests.
post-hoc tests.
effect size statistics.
confidence intervals.
2.5 points
Question 19
In Zinman and Zitzewitz's (2009) research on snowfall reports, they found the following interaction:
the amount of snowfall reported by resorts was always exaggerated, but that phenomenon was even greater on the weekends.
weekday snow reports were less interesting to skiers than weekend reports.
snowfall reports were more common during weekends than weekdays, but this was even more true when there was fresh snow.
snowfall
reports were exaggerated, and this was more pronounced for the weather
reports provided by radio stations compared to resorts.
2.5 points
Question 20
A
researcher is interested in whether circadian rhythms influence
participants' performance on different kinds of memory tests. The
researcher first classifies participants according to whether each is a
morning person or evening person. The researcher then randomly assigns
participants to receive either an implicit memory test or an explicit
memory test. The researcher next tests everyone at 8 A.M. How many cells
does this study have?
2
4
6
8
2.5 points
Question 21
The z, t, and F calculations have something in common: the numerator of the test statistic:
contains a measure of difference among groups.
contains a measure of sample variability.
is a squared number.
represents what would be expected to happen by chance.
2.5 points
Question 22
The assumptions for all ANOVAs are the same and include all of the following EXCEPT:
random selection of participants
population is normally distributed
population variances are equal
participants are all different across conditions
2.5 points
Question 23
________ is the proportion of variance in the dependent variable that is accounted for by the independent variable.
t
Cohen's d
R2
z
2.5 points
Question 24
According to Cohen's conventions, an effect size of 0.019 for a one-way within-groups ANOVA is considered to be:
small.
medium.
medium-to-large.
large.
2.5 points
Question 25
Forys
and Dahlquist (2007) investigated the effects of coping style and
cognitive strategy on dealing with pain. Participants were first
classified as having a monitoring or avoiding coping style. Participants
were then randomly assigned to one of two cognitive strategy
conditions, distraction or sensation monitoring. Participants were next
instructed to use the cognitive strategy while submerging their hand in
ice water. The researchers measured pain tolerance as the number of
seconds participants were able to keep their hand in the ice water. How
would you label the ANOVA used to analyze this data?
4 × 2 between-groups ANOVA
4 × 2 within-groups ANOVA
2 × 2 between-groups ANOVA
2 × 2 within-groups ANOVA
2.5 points
Question 26
Identify the correct formula for degrees of freedom between-groups:
Ngroups – 1
n – 1
Ntotal – 1
n – 2
2.5 points
Question 27
A
researcher is interested in whether circadian rhythms influence
participants' performance on different kinds of memory tests. The
researcher first classifies participants according to whether each is a
morning person or an evening person. The researcher then randomly
assigns participants to receive either an implicit memory test or an
explicit memory test. The researcher then tests everyone at 8 A.M. How
would you label the ANOVA used to analyze these data?
4 × 2 between-groups ANOVA
4 × 2 within-groups ANOVA
2 × 2 between-groups ANOVA
2 × 2 within-groups ANOVA
2.5 points
Question 28
A measure of the differences among group means is:
the z score.
between-groups variance.
within-groups variance.
the proportionate reduction in error.
2.5 points
Question 29
An interaction occurs when:
the dependent variable does not depend on any of the independent variables.
two independent variables both influence the dependent variable.
the effects of one independent variable depend on the level of the other independent variable.
a single independent variable changes the dependent variable, disregarding all other variables in the study.
2.5 points
Question 30
F is obtained by dividing ________ by ________.
SSbetween; dfbetween
MSbetween; MSwithin
dfbetween; SSbetween
SSbetween; SSwithin
2.5 points
Question 31
In
addition to assessing whether each independent variable has an effect
on the dependent variable, a factorial ANOVA also allows you to:
use multiple dependent measures in a single analysis.
control
for a third variable that might be related to the dependent measure,
prior to investigating the independent variable of interest.
determine whether the effects of one factor depend on the other factor.
partition out the variability due to individual differences and the variability due to measurement error.
2.5 points
Question 32
Heteroscedastic populations are those that:
have the same variance.
have homogeneity of means.
share common means.
have different variances.
2.5 points
Question 33
According to Cohen's conventions, an effect size of 0.29 for a one-way within-groups ANOVA is considered to be:
small.
medium.
medium-to-large.
large.
2.5 points
Question 34
An effect size of 0.015 for a two-way ANOVA is considered to be:
small.
medium.
large.
an error.
2.5 points
Question 35
If you calculate an F statistic and find that it is negative, then you know that:
the within-groups variance exceeds the between-groups variance.
the difference among the group means is greater than what would have occurred by chance.
you have made a calculation error.
the difference among the group means is less than what would have occurred by chance.
2.5 points
Question 36
A
boarding school (where students live and go to school) wants to find
out if students’ scores on a Happiness Rating Scale change over the
course of their first year. To this end, they administer the rating
scale to students during the first week, and again at the end of the
school year. Which type of t-test should the school staff use to test
whether there is a significant change in happiness ratings?
t-test for independent means
one-sample (single sample) t-test
t-test for dependent means
a combination of all 3.
2.5 points
Question 37
If
the results of a two-tailed t-test were to be presented in a research
article, and there were 25 participants, what is the appropriate number
in parentheses after the t?
t(25)
t(1)
t(2)
t(24)
2.5 points
Question 38
A
community psychologist observes that children in a certain school tend
to score lower on standardized math tests than students at other schools
in the district. He knows that the mean scores of children in the
district as a whole is 110. Which type of t-test should he use to
determine whether the scores of the children in the school differ
significantly from the scores in the school district overall?
t-test for independent means
one-sample (single sample) t-test
t-test for dependent means
none of the above
2.5 points
Question 39
A
psychologist publishes a paper based on a study and states that the
results are significant at the .05 level. Based on this information,
which of the following could be the p value of the results of the study?
.045
.4
.104
.06
2.5 points
Question 40
A
social psychologist wants to test whether introverts and extroverts
have different numbers of friends on a social networking site. She
administers a personality test and, based on the results, divides the
participants into 2 groups, Introverts and Extroverts. She then surveys
the groups to find out how many friends they have recorded on the social
networking site. Which type of t-test should she use to analyze the
results?
t-test for independent means
one-sample (single sample) t-test
t-test for dependent means
It doesn’t matter, any of them should work.
Colorado State University Global Logarithmic Model Quantity and Pricing Worksheet
As a manager, you have the following data collected by your data analyst regarding the price and quantity demanded:
Price ...
Colorado State University Global Logarithmic Model Quantity and Pricing Worksheet
As a manager, you have the following data collected by your data analyst regarding the price and quantity demanded:
Price of One Shirt (P)
Demand (D)
2300
152
2000
159
1700
164
1500
171
1300
176
1200
180
1000
189
Note that you are asked to use a graphing utility in this assignment. A recommended online utility is https://www.desmos.com/calculator (Links to an external site.). It allows graphing and then copying and posting into a Word document.
Using a graphing utility, draw a scatter diagram with price as a function of demand.
Using a graphing utility, build a logarithmic model from the data.
Graph the logarithmic function in the scatter diagram.
Use the function you found above to predict the number of quantities that will be demanded if the price is $1750.
Use the function you found in #2 to predict the price, if the quantity demanded is 174.
Requirements:
Your paper should be 2-3 pages (not counting the title page and references page) and cite and integrate at least one credible outside source. The CSU Global Library (Links to an external site.) is a great place to find resources. Your textbook is a credible resource.
Include a title page, introduction, body, conclusion, and a reference page.
The introduction should describe or summarize the topic or problem. It might discuss the general applications of the topic or it might introduce the unique terminology associated with the topic.
The body of your paper should address the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.
The conclusion should summarize your thoughts about what you have determined from your analysis in completing the assignment. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.
10 pages
Harrah S Case Study
Harrah Entertainment, Inc., is a multifaceted business found on October 30, 1937. It is renowned in the betting trade and ...
Harrah S Case Study
Harrah Entertainment, Inc., is a multifaceted business found on October 30, 1937. It is renowned in the betting trade and controls gaming house/hotels ...
ASU Capital Budgeting Practice Quantatitive Math Health Service Worksheet
ACTIVITY: CAPITAL BUDGETING PRACTICEComplete the following and submit it in a Word document. Be sure to show your process ...
ASU Capital Budgeting Practice Quantatitive Math Health Service Worksheet
ACTIVITY: CAPITAL BUDGETING PRACTICEComplete the following and submit it in a Word document. Be sure to show your process and calculations:Assume you have just retired as the CEO of a successful company. A major publisher has offered you a book deal. The publisher will pay you $1 million up front if you agree to write a book about your experiences. You estimate that it will take three years to write the book. The time you spend writing will cause you to give up speaking engagements amounting to $500,000 per year. You estimate your opportunity cost to be 10%.Should you accept this deal? Plot a diagram that measures NPV (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRR for this deal. (Hint: IRR is the point at which NPV = 0)Suppose you inform the publisher that it needs to sweeten the deal before you will accept it. The publisher offers $550,000 advance and $1,000,000 in four years when the book is published.Should you accept or reject the new offer? Again, plot a diagram that measures NVP (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRRs for this deal (Hint: There are two IRRs for this problem).Discuss if the IRR rule for making budgetary decisions can be used in this case.Finally, you are able to get the publisher to increase your advance to $750,000, in addition to the $1 million when the book is published in four years.Should you accept or reject this new offer? Again, plot a diagram that measures NVP (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRR for this deal.State three conclusions regarding the use of IRR vs. NPV that you can make from questions 2–4. Which is the stronger method to use (IRR or NPV), and why?By submitting this paper, you agree: (1) that you are submitting your paper to be used and stored as part of the SafeAssign™ services in accordance with the Blackboard Privacy Policy; (2) that your institution may use your paper in accordance with your institution's policies; and (3) that your use of SafeAssign will be without recourse against Blackboard Inc. and its affiliates.
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Quality at A1 Hotels
A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, th ...
Quality at A1 Hotels
A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, they have been concerned about the quality of service. The company has been giving the following survey to its clients after their stay:How would you rate the quality of your room? Select one. Good(G), Poor(P)How would you rate the quality of your food? Select one. Good(G), Poor(P)How would you rate the quality of your service? Select one. Good (G), Poor(P)Any customer who answered “Poor” to at least one of the three questions up above is considered to be “dissatisfied.” Traditionally, 40% of customers have been dissatisfied.A1 Hotels would like to study customer satisfaction. Therefore, 200 survey responses were recently chosen at random for analysis. The complete data set is in the file named Hotels.Managerial ReportPrepare a report (see below) for A1 Hotels that summarizes your assessment of customer satisfaction. Be sure to include the following seven items in your report.To summarize the data, compute the proportion of all clients thatAnswered “Poor” to room quality.Answered “Poor” to food quality.Answered “Poor” to service quality.Develop the 92% confidence interval for the proportion of all recent clients that were “dissatisfied.” What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to room quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to food quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to service quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Conduct a hypothesis test (using either the p-Value Approach or the Critical Value Approach) to determine if the proportion of all recent clients is more dissatisfied than the traditional level of dissatisfaction. Use α = 0.08. Do not forget to include the correctly worded hypotheses and show all the steps required to conduct the hypothesis test.What advice would you give to A1 Hotels based upon your analysis of the data? What is the magnitude of the issue? How can this study be improved?Write a report that adheres to the Written Assignment Requirements under the heading “Expectations for CSU-Global Written Assignments” found in the CSU-Global Guide to Writing and APA Requirements. As with all written assignments at CSU-Global, you should have in-text citations and a reference page. An example paper is provided in the MTH410 Guide to Writing with Statistics. (link provided at the bottom of the page)Submit your Excel file in addition to your report.Requirements:Paper must be written in third person.Your paper should be four to five pages in length (counting the title page and references page) and cite and integrate at least one credible outside source. The CSU-Global Library is a great place to find resources.Include a title page, introduction, body, conclusion, and a reference page.The introduction should describe or summarize the topic or problem. It might discuss the importance of the topic or how it affects you or society as a whole, or it might discuss or describe the unique terminology associated with the topic.The body of your paper should answer the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.The conclusion should summarize your thoughts about what you have determined from the data and your analysis, often with a broader personal or societal perspective in mind. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.Include any tables of data or calculations, calculated values, and/or graphs associated with this problem in the body of your assignment.Document formatting, citations, and style should conform to the CSU-Global Virtual Library CSU-Global Guide to Writing and APA: Introduction. A short summary containing much that you need to know about paper formatting, citations, and references is contained in the New Sample APA Paper. In addition, information in the CSU-Global Virtual Library under the Writing Center/APA Resources tab has many helpful areas (Writing Center, Writing Tips, Template & Examples/Papers & Essays, and others).
Need help with this 2 tes
Question 1
A(n) ________ occurs when ________ independent variable(s) have an effect in combinati ...
Need help with this 2 tes
Question 1
A(n) ________ occurs when ________ independent variable(s) have an effect in combination with one another.
interaction; two or more
interaction; two or less
main effect; two or more
main effect; two or less
2.5 points
Question 2
Interested
in the effects of different kinds of instruction on videogame
performance, Martin asks 30 college freshmen to each play an hour of
Ratchet and Klank. Participants are randomly assigned to one of three
instruction groups: (1) complete the tasks as quickly as possible, (2)
conserve as much health as possible (i.e., play more carefully), or (3)
find gold bolts (worth lots of money in equipment and ammunition). If
Martin averages the scores for each instruction group and then compares
them, any differences in the means of the instruction groups reflect:
individual differences in hand-eye coordination.
inherent differences in the ability of the college freshmen to play video games.
within-groups variance.
between-groups variance.
2.5 points
Question 3
Why can't a researcher just run multiple t tests when the independent variable has more than two levels?
As you run more statistical tests, it becomes harder and harder to reject the null hypothesis.
As you run more statistical tests, the probability that you will make a Type I error in one of the tests increases.
As you run more statistical tests, you lose degrees of freedom.
As you run more statistical tests, the probability that you will make a Type III error in one of those tests increases.
2.5 points
Question 4
________ is a term used to describe an independent variable in a study with more than one independent variable.
Interaction
Main effect
Effect
Factor
2.5 points
Question 5
(Table:
Coping with Pain) The cells of this study reflect an interaction
between coping style and cognitive strategy. Which statement best
describes the interaction?
People
using both distraction and sensation-monitoring cognitive strategies
were able to keep their hand in the ice water for longer than 60
seconds, on average.
People using a sensation-monitoring strategy were able to keep their hand in the ice water for longer.
People using a distraction strategy were able to keep their hand in the ice water for longer.
The
effect of cognitive strategy depended on the coping style of the
participant. Those with an avoiding coping style kept their hand in the
ice water longer when using a distraction strategy, but those with a
monitoring coping style kept their hand in the ice water longer when
using a sensation-monitoring strategy.
2.5 points
Question 6
A five-way ANOVA has:
five dependent variables and two independent variables.
one dependent variable and five independent variables.
one dependent variable and four independent variables.
five dependent variables and five independent variables.
2.5 points
Question 7
The F ratio is calculated by:
dividing a measure of within-groups variability by a measure of between-groups variability.
averaging the results from the t tests for all possible two-group comparisons.
dividing a measure of between-groups variability by a measure of within-groups variability.
initially squaring all the scores.
2.5 points
Question 8
According to Cohen's conventions, an R2 of 0.19 is considered to be a(n) ________ effect size.
small
medium
large
erroneous
2.5 points
Question 9
Given
a scale dependent variable and a nominal independent variable with
three or more levels, we could use a(n) ________ to analyze the data.
PRE test
z test
t test
ANOVA
2.5 points
Question 10
A researcher wants to statistically test whether gender affects math test scores. Which test should the researcher use?
one-way ANOVA
two-way ANOVA
three-way ANOVA
within-groups ANOVA
2.5 points
Question 11
In a two-way ANOVA, the researcher makes decisions regarding ________ null hypotheses.
three separate
two separate
three interdependent
two interdependent
2.5 points
Question 12
A
researcher wants to examine people's preference for pets by having 10
people act as “foster owners” for four different types of family pets:
dogs, cats, birds, and fish. The participants will foster each type of
pet for one week, and a scale measure will be used to assess preference.
What research design should be used?
one-way between-groups ANOVA
correlation
one-way within-groups ANOVA
paired-samples t tests
2.5 points
Question 13
The F ratio is a ratio of:
two (or more) sample means.
two variances.
sample means divided by sample variances.
two sum-of-squares estimates.
2.5 points
Question 14
A post-hoc test is warranted when:
the F is significant and there are more than two groups.
we fail to reject the null hypothesis in an ANOVA.
we reject the null hypothesis when performing an independent-groups t test.
we have an a priori prediction about which group means will differ.
2.5 points
Question 15
A hypothesis test with two nominal independent variables and a scale dependent variable is a:
one-way ANOVA.
two-way ANOVA.
two-groups t test.
two-groups z test.
2.5 points
Question 16
A within-groups ANOVA is used when we have ________ independent variable(s) with ________ levels.
1; more than 2
2; more than 2
1; less than 2
2; less than 2
2.5 points
Question 17
Which degrees of freedom value is unique to the one-way within-groups ANOVA?
between-groups
subjects
within-groups
total
2.5 points
Question 18
The Bonferroni, Scheffé, and Tukey are all examples of:
hypothesis tests.
post-hoc tests.
effect size statistics.
confidence intervals.
2.5 points
Question 19
In Zinman and Zitzewitz's (2009) research on snowfall reports, they found the following interaction:
the amount of snowfall reported by resorts was always exaggerated, but that phenomenon was even greater on the weekends.
weekday snow reports were less interesting to skiers than weekend reports.
snowfall reports were more common during weekends than weekdays, but this was even more true when there was fresh snow.
snowfall
reports were exaggerated, and this was more pronounced for the weather
reports provided by radio stations compared to resorts.
2.5 points
Question 20
A
researcher is interested in whether circadian rhythms influence
participants' performance on different kinds of memory tests. The
researcher first classifies participants according to whether each is a
morning person or evening person. The researcher then randomly assigns
participants to receive either an implicit memory test or an explicit
memory test. The researcher next tests everyone at 8 A.M. How many cells
does this study have?
2
4
6
8
2.5 points
Question 21
The z, t, and F calculations have something in common: the numerator of the test statistic:
contains a measure of difference among groups.
contains a measure of sample variability.
is a squared number.
represents what would be expected to happen by chance.
2.5 points
Question 22
The assumptions for all ANOVAs are the same and include all of the following EXCEPT:
random selection of participants
population is normally distributed
population variances are equal
participants are all different across conditions
2.5 points
Question 23
________ is the proportion of variance in the dependent variable that is accounted for by the independent variable.
t
Cohen's d
R2
z
2.5 points
Question 24
According to Cohen's conventions, an effect size of 0.019 for a one-way within-groups ANOVA is considered to be:
small.
medium.
medium-to-large.
large.
2.5 points
Question 25
Forys
and Dahlquist (2007) investigated the effects of coping style and
cognitive strategy on dealing with pain. Participants were first
classified as having a monitoring or avoiding coping style. Participants
were then randomly assigned to one of two cognitive strategy
conditions, distraction or sensation monitoring. Participants were next
instructed to use the cognitive strategy while submerging their hand in
ice water. The researchers measured pain tolerance as the number of
seconds participants were able to keep their hand in the ice water. How
would you label the ANOVA used to analyze this data?
4 × 2 between-groups ANOVA
4 × 2 within-groups ANOVA
2 × 2 between-groups ANOVA
2 × 2 within-groups ANOVA
2.5 points
Question 26
Identify the correct formula for degrees of freedom between-groups:
Ngroups – 1
n – 1
Ntotal – 1
n – 2
2.5 points
Question 27
A
researcher is interested in whether circadian rhythms influence
participants' performance on different kinds of memory tests. The
researcher first classifies participants according to whether each is a
morning person or an evening person. The researcher then randomly
assigns participants to receive either an implicit memory test or an
explicit memory test. The researcher then tests everyone at 8 A.M. How
would you label the ANOVA used to analyze these data?
4 × 2 between-groups ANOVA
4 × 2 within-groups ANOVA
2 × 2 between-groups ANOVA
2 × 2 within-groups ANOVA
2.5 points
Question 28
A measure of the differences among group means is:
the z score.
between-groups variance.
within-groups variance.
the proportionate reduction in error.
2.5 points
Question 29
An interaction occurs when:
the dependent variable does not depend on any of the independent variables.
two independent variables both influence the dependent variable.
the effects of one independent variable depend on the level of the other independent variable.
a single independent variable changes the dependent variable, disregarding all other variables in the study.
2.5 points
Question 30
F is obtained by dividing ________ by ________.
SSbetween; dfbetween
MSbetween; MSwithin
dfbetween; SSbetween
SSbetween; SSwithin
2.5 points
Question 31
In
addition to assessing whether each independent variable has an effect
on the dependent variable, a factorial ANOVA also allows you to:
use multiple dependent measures in a single analysis.
control
for a third variable that might be related to the dependent measure,
prior to investigating the independent variable of interest.
determine whether the effects of one factor depend on the other factor.
partition out the variability due to individual differences and the variability due to measurement error.
2.5 points
Question 32
Heteroscedastic populations are those that:
have the same variance.
have homogeneity of means.
share common means.
have different variances.
2.5 points
Question 33
According to Cohen's conventions, an effect size of 0.29 for a one-way within-groups ANOVA is considered to be:
small.
medium.
medium-to-large.
large.
2.5 points
Question 34
An effect size of 0.015 for a two-way ANOVA is considered to be:
small.
medium.
large.
an error.
2.5 points
Question 35
If you calculate an F statistic and find that it is negative, then you know that:
the within-groups variance exceeds the between-groups variance.
the difference among the group means is greater than what would have occurred by chance.
you have made a calculation error.
the difference among the group means is less than what would have occurred by chance.
2.5 points
Question 36
A
boarding school (where students live and go to school) wants to find
out if students’ scores on a Happiness Rating Scale change over the
course of their first year. To this end, they administer the rating
scale to students during the first week, and again at the end of the
school year. Which type of t-test should the school staff use to test
whether there is a significant change in happiness ratings?
t-test for independent means
one-sample (single sample) t-test
t-test for dependent means
a combination of all 3.
2.5 points
Question 37
If
the results of a two-tailed t-test were to be presented in a research
article, and there were 25 participants, what is the appropriate number
in parentheses after the t?
t(25)
t(1)
t(2)
t(24)
2.5 points
Question 38
A
community psychologist observes that children in a certain school tend
to score lower on standardized math tests than students at other schools
in the district. He knows that the mean scores of children in the
district as a whole is 110. Which type of t-test should he use to
determine whether the scores of the children in the school differ
significantly from the scores in the school district overall?
t-test for independent means
one-sample (single sample) t-test
t-test for dependent means
none of the above
2.5 points
Question 39
A
psychologist publishes a paper based on a study and states that the
results are significant at the .05 level. Based on this information,
which of the following could be the p value of the results of the study?
.045
.4
.104
.06
2.5 points
Question 40
A
social psychologist wants to test whether introverts and extroverts
have different numbers of friends on a social networking site. She
administers a personality test and, based on the results, divides the
participants into 2 groups, Introverts and Extroverts. She then surveys
the groups to find out how many friends they have recorded on the social
networking site. Which type of t-test should she use to analyze the
results?
t-test for independent means
one-sample (single sample) t-test
t-test for dependent means
It doesn’t matter, any of them should work.
Colorado State University Global Logarithmic Model Quantity and Pricing Worksheet
As a manager, you have the following data collected by your data analyst regarding the price and quantity demanded:
Price ...
Colorado State University Global Logarithmic Model Quantity and Pricing Worksheet
As a manager, you have the following data collected by your data analyst regarding the price and quantity demanded:
Price of One Shirt (P)
Demand (D)
2300
152
2000
159
1700
164
1500
171
1300
176
1200
180
1000
189
Note that you are asked to use a graphing utility in this assignment. A recommended online utility is https://www.desmos.com/calculator (Links to an external site.). It allows graphing and then copying and posting into a Word document.
Using a graphing utility, draw a scatter diagram with price as a function of demand.
Using a graphing utility, build a logarithmic model from the data.
Graph the logarithmic function in the scatter diagram.
Use the function you found above to predict the number of quantities that will be demanded if the price is $1750.
Use the function you found in #2 to predict the price, if the quantity demanded is 174.
Requirements:
Your paper should be 2-3 pages (not counting the title page and references page) and cite and integrate at least one credible outside source. The CSU Global Library (Links to an external site.) is a great place to find resources. Your textbook is a credible resource.
Include a title page, introduction, body, conclusion, and a reference page.
The introduction should describe or summarize the topic or problem. It might discuss the general applications of the topic or it might introduce the unique terminology associated with the topic.
The body of your paper should address the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.
The conclusion should summarize your thoughts about what you have determined from your analysis in completing the assignment. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.
10 pages
Harrah S Case Study
Harrah Entertainment, Inc., is a multifaceted business found on October 30, 1937. It is renowned in the betting trade and ...
Harrah S Case Study
Harrah Entertainment, Inc., is a multifaceted business found on October 30, 1937. It is renowned in the betting trade and controls gaming house/hotels ...
ASU Capital Budgeting Practice Quantatitive Math Health Service Worksheet
ACTIVITY: CAPITAL BUDGETING PRACTICEComplete the following and submit it in a Word document. Be sure to show your process ...
ASU Capital Budgeting Practice Quantatitive Math Health Service Worksheet
ACTIVITY: CAPITAL BUDGETING PRACTICEComplete the following and submit it in a Word document. Be sure to show your process and calculations:Assume you have just retired as the CEO of a successful company. A major publisher has offered you a book deal. The publisher will pay you $1 million up front if you agree to write a book about your experiences. You estimate that it will take three years to write the book. The time you spend writing will cause you to give up speaking engagements amounting to $500,000 per year. You estimate your opportunity cost to be 10%.Should you accept this deal? Plot a diagram that measures NPV (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRR for this deal. (Hint: IRR is the point at which NPV = 0)Suppose you inform the publisher that it needs to sweeten the deal before you will accept it. The publisher offers $550,000 advance and $1,000,000 in four years when the book is published.Should you accept or reject the new offer? Again, plot a diagram that measures NVP (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRRs for this deal (Hint: There are two IRRs for this problem).Discuss if the IRR rule for making budgetary decisions can be used in this case.Finally, you are able to get the publisher to increase your advance to $750,000, in addition to the $1 million when the book is published in four years.Should you accept or reject this new offer? Again, plot a diagram that measures NVP (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRR for this deal.State three conclusions regarding the use of IRR vs. NPV that you can make from questions 2–4. Which is the stronger method to use (IRR or NPV), and why?By submitting this paper, you agree: (1) that you are submitting your paper to be used and stored as part of the SafeAssign™ services in accordance with the Blackboard Privacy Policy; (2) that your institution may use your paper in accordance with your institution's policies; and (3) that your use of SafeAssign will be without recourse against Blackboard Inc. and its affiliates.
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