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a) convenience sampling because it was done on the respondents own will
b)probability of carpooling was 14/54 and probability for not car pooling was 40/54
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Discuss Confidence Intervals
In everyday terms, a confidence interval is the range of values around a sample statistic (such as mean or proportion) wit ...
Discuss Confidence Intervals
In everyday terms, a confidence interval is the range of values around a sample statistic (such as mean or proportion) within which clinicians can ...
polynomial functions, algebra homework help
Estimate the zeros of the function shown in the graph below.{-2.9, -1, 0.8}{-2, 0}{-2, -1, 0}{-2.9, -1, -2 ...
polynomial functions, algebra homework help
Estimate the zeros of the function shown in the graph below.{-2.9, -1, 0.8}{-2, 0}{-2, -1, 0}{-2.9, -1, -2, 0.8=========================In the function shown in the chart below, at which values of x are there relative minima or maxima?xf(x)-3-2-22-100-212218352 2 and -2-3 and 3-2 and 0-3, 0, and 3============================In the function shown in the chart below, between what values of x would you find the zeros of the function?xf(x)-373-28-1-70-81-728373-1 and 0, 0 and 1-2 and -1, 1 and 2-7 and 8, -8 and -71 and -1============================Which of the following could be the graph of f(x) = x3 + x2 - 3x?A.B.C.D.================================================Estimate the relative maximums in the graph below.(1.3, 1.4) and (-0.6, 2.6)(-0.6, 2.6,), (0.5, 0.3), and (1.3, 1.4)(-1, 0) and (1.8, 0)(-1, 0), (0, 1), and (1.8, 0)====================Which of the following shows a graph that meets the following conditions.I. As x → ∞, f(x) → ∞ II. The degree of f(x) is odd III. the leading coefficient is positiveA.B.C.D.=====================================For the graph below, which of the following is true?I. As x → ∞, f(x) → ∞ II. As x → ∞, f(x) → -∞ III. As x → -∞, f(x) → ∞ IV. As x → -∞, f(x) → -∞ V. f(x) is odd VI. the leading coefficient is negativeI, III, and V are trueII, III, V, and VI are trueII, III, and V are trueII, IV, V, and VI are true====================================Find r(x + 1) if r(x) = x3 + x + 1x3 + 3x2 + 4x + 3x3 + 4x2 + 5x + 3x3 + 2x + 3x4 + x3 + x2 + 2x + 1=======================Find p(-4) if p(x) = x5 - x21040-10401008-1008============================What is the degree and leading coefficient of the polynomial below?6x3 + 3x4 = 2x2 - 2degree = 4, leading coefficient = 3degree = 3, leading coefficient = 6degree = 2, leading coefficient = 2degree = 0, leading coefficient = -2
Walden University Computation by Hand Project
Assignment: Computation by Hand
Table 1:
Survival Status
Donor’s SexAliveDeadTotalFemale52 ...
Walden University Computation by Hand Project
Assignment: Computation by Hand
Table 1:
Survival Status
Donor’s SexAliveDeadTotalFemale52456Male11027137Total16231193
Compute the simple odds ratio of the association of donor’s sex and survival status of the infant. Be sure to answer all four parts to this question (a, b, c, and d), including manual calculation of the chi-square value. (40 Points)
Manually calculate a simple odds ratio to test the hypothesis of no association between donor’s sex and the survival status of the infant, without the inclusion of the variable severity using a 2 x 2 table for sex and survival (10 Points).
Manually calculate the confidence interval associated with that odds ratio using the appropriate formula (10 Points).
Manually compute the Chi Square test statistic for this table (10 Points).
Interpret the results. Include an interpretation of the odds ratio, the confidence interval, and the Chi Square test statistic in your response (10 Points).
Table 2:
Survival Status
Disease SeverityDonor’s SexAliveDeadTotalNoneFemale14115 Male21223MildFemale17118 Male40242ModerateFemale15116 Male33639SevereFemale617 Male161733Total 16231193
Using data in table 2, compute the common odds ratio of the association between donor’s sex and the survival status of the infant, after controlling for severity (30 Points).
Manually calculate a common odds ratio to test the hypothesis of no association between donor’s sex and the survival status of the infant, after the inclusion of the variable severity using the common odds ratio (10 Points).
Interpret the results. How does the common odds ratio differ from the simple odds ratio computed in part 1? What effect might it have on your decision from part 1 to reject or fail to reject the null hypothesis? (10 Points).
Why is it important to know the effect of severity on the association of gender and survival? (10 Points)
Perform a simple logistic regression using SPSS and the Week 6 Dataset (SPSS document). Answer the following questions based on your SPSS output (30 Points)
Are the results of the simple logistic regression similar to or different from the results of the simple odds ratio (10 Points)?
How are they similar or different? Include output from SPSS and an interpretation of the OR and confidence intervals in your response (10 Points).
What can you do using logistic regression to duplicate the results from part 2 of this application (the use of CMH for common odds) (10 Points)?
Joshua's garden and chicken wire.
Joshua
has decided to convert part of his back yard into a garden. He knows from his neighbor’s experience that
...
Joshua's garden and chicken wire.
Joshua
has decided to convert part of his back yard into a garden. He knows from his neighbor’s experience that
he needs to fence in the garden to keep the animals out. At the hardware store, he buys 200 feet of
chicken wire. After he gets home he unrolls
the wire, he finds to his surprise that there are many different sizes gardens
that he can make with 200 feet of fencing.
He decided that he wants to get the largest garden from 200 feet of
fencing. What are the dimensions of his
garden? I also need to know what if he used "n" amount of chicken wire..
MCT 4 Colorado State University Global Campus Rental Condition Research Paper
Option #2: Rental Condition
Aardvark Auto Rental rents vehicles. Each day Aardvark Automotive
Rental keeps track of whe ...
MCT 4 Colorado State University Global Campus Rental Condition Research Paper
Option #2: Rental Condition
Aardvark Auto Rental rents vehicles. Each day Aardvark Automotive
Rental keeps track of whether its SUVs were returned in "failing"
condition. Aardvark must use more of its resources to restore each SUV
with a "failing" returned condition. Aardvark rents an average of five
SUVs each day. The condition of returned SUVs is recorded for many days
in which five SUVs were rented.Download the file titled SUV Failures. It contains a scatter plot of
the number of failures versus frequency. To compare the results to the
binomial distribution, complete the following:
Explain why SUV rental condition scenario can be a binomial experiment.
Using the SUV Failure scatter plot, construct a frequency distribution for the number of failures.
Compute the mean number of failures. The formula for the mean is as follows:
∑
(
x
⋅
f
)
∑
f
The terms x represent the total number of failures (0, 1, 2, 3, 4,
5) and f is the corresponding frequency (number of days where xᵢ
failures occurred). Explain what the numerical result means.
From the frequency distribution, construct the corresponding
relative frequency distribution.Explain why the relative frequency
distribution table is a probability distribution.Then, use Excel to
create a scatter plot of the probability distribution:Select the two
columns of the probability distribution. Click on INSERT, and then go to
the Charts area and select Scatter. Then choose the first Scatter chart
(the one without lines connecting).
Using the frequency distribution, what is the SUV failure average?
In part 3, note that the numerator in the formula for the mean is the
total number of failures. The total number of trials is the denominator
of the formula for the mean multiplied by 5. What does this average
mean?
The Binomial Distribution is uniquely determined by n, the number of
trials, and p, the probability of "success" on each trial. Using Excel,
construct the Binomial Probability Distribution for five trials, n, and
probability of success, p, as the SUV failure average in part 5. Here
is an explanation of the BINOM.DIST function in Excel: https://support.office.com/en-ie/article/BINOM-DIST-function-c5ae37b6-f39c-4be2-94c2-509a1480770c?ui=en-USrs=en-IEad=I (Links to an external site.)
For example, In Excel=BINOM.DIST(7,15,0.7, FALSE)represents the probability of 7 successes out of 15 (n) trials. The 0.7 is the probability of success, p.Using the above value of n=5 with probability of success, p, as the
SUV failure average in part 5, what is the probability of at least three
SUV failures?
Using the formula for the mean of the Binomial Distribution, what is the mean number of failures in part 6 above?
In Excel, create a scatter plot for the Binomial Distribution. The instructions for creating a scatter plot are in part 4 above.
Use the results above to compare the probability distribution of SUV
failures and the Binomial Distribution. Compare the means in parts 4
and 6, too.
If the probability distribution of SUV failures and the Binomial Distribution differ, explain why that is so.
Do you think the Binomial Distribution is a good model for the SUV failure scenario? Why or why not?
How can Aardvark Auto Rental use the binomial distribution to approximate SUV failures?
In what other scenarios can Aardvark Auto Rental use the Binomial Distribution? Explain.
Write a report that adheres to the formatting and APA expectations outlined on the CSU Global Writing Center (Links to an external site.). As with all written assignments at CSU Global, you should have in-text citations and a reference page.Submit your Excel file in addition to your report.Requirements:
The 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 (Links to an external site.) 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, 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
the Word document 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. Your conclusion should emanate from (be aligned with)
your findings.
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 Writing Center (Links to an external site.). A short summary containing guidelines for paper formatting, citations, and references is contained in the New Sample APA Paper (Links to an external site.). In addition, information in the CSU Global Library (Links to an external site.) has many helpful areas (Writing Center, Writing Tips, Template Examples/Papers Essays, and others).
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Most Popular Content
3 pages
Discuss Confidence Intervals
In everyday terms, a confidence interval is the range of values around a sample statistic (such as mean or proportion) wit ...
Discuss Confidence Intervals
In everyday terms, a confidence interval is the range of values around a sample statistic (such as mean or proportion) within which clinicians can ...
polynomial functions, algebra homework help
Estimate the zeros of the function shown in the graph below.{-2.9, -1, 0.8}{-2, 0}{-2, -1, 0}{-2.9, -1, -2 ...
polynomial functions, algebra homework help
Estimate the zeros of the function shown in the graph below.{-2.9, -1, 0.8}{-2, 0}{-2, -1, 0}{-2.9, -1, -2, 0.8=========================In the function shown in the chart below, at which values of x are there relative minima or maxima?xf(x)-3-2-22-100-212218352 2 and -2-3 and 3-2 and 0-3, 0, and 3============================In the function shown in the chart below, between what values of x would you find the zeros of the function?xf(x)-373-28-1-70-81-728373-1 and 0, 0 and 1-2 and -1, 1 and 2-7 and 8, -8 and -71 and -1============================Which of the following could be the graph of f(x) = x3 + x2 - 3x?A.B.C.D.================================================Estimate the relative maximums in the graph below.(1.3, 1.4) and (-0.6, 2.6)(-0.6, 2.6,), (0.5, 0.3), and (1.3, 1.4)(-1, 0) and (1.8, 0)(-1, 0), (0, 1), and (1.8, 0)====================Which of the following shows a graph that meets the following conditions.I. As x → ∞, f(x) → ∞ II. The degree of f(x) is odd III. the leading coefficient is positiveA.B.C.D.=====================================For the graph below, which of the following is true?I. As x → ∞, f(x) → ∞ II. As x → ∞, f(x) → -∞ III. As x → -∞, f(x) → ∞ IV. As x → -∞, f(x) → -∞ V. f(x) is odd VI. the leading coefficient is negativeI, III, and V are trueII, III, V, and VI are trueII, III, and V are trueII, IV, V, and VI are true====================================Find r(x + 1) if r(x) = x3 + x + 1x3 + 3x2 + 4x + 3x3 + 4x2 + 5x + 3x3 + 2x + 3x4 + x3 + x2 + 2x + 1=======================Find p(-4) if p(x) = x5 - x21040-10401008-1008============================What is the degree and leading coefficient of the polynomial below?6x3 + 3x4 = 2x2 - 2degree = 4, leading coefficient = 3degree = 3, leading coefficient = 6degree = 2, leading coefficient = 2degree = 0, leading coefficient = -2
Walden University Computation by Hand Project
Assignment: Computation by Hand
Table 1:
Survival Status
Donor’s SexAliveDeadTotalFemale52 ...
Walden University Computation by Hand Project
Assignment: Computation by Hand
Table 1:
Survival Status
Donor’s SexAliveDeadTotalFemale52456Male11027137Total16231193
Compute the simple odds ratio of the association of donor’s sex and survival status of the infant. Be sure to answer all four parts to this question (a, b, c, and d), including manual calculation of the chi-square value. (40 Points)
Manually calculate a simple odds ratio to test the hypothesis of no association between donor’s sex and the survival status of the infant, without the inclusion of the variable severity using a 2 x 2 table for sex and survival (10 Points).
Manually calculate the confidence interval associated with that odds ratio using the appropriate formula (10 Points).
Manually compute the Chi Square test statistic for this table (10 Points).
Interpret the results. Include an interpretation of the odds ratio, the confidence interval, and the Chi Square test statistic in your response (10 Points).
Table 2:
Survival Status
Disease SeverityDonor’s SexAliveDeadTotalNoneFemale14115 Male21223MildFemale17118 Male40242ModerateFemale15116 Male33639SevereFemale617 Male161733Total 16231193
Using data in table 2, compute the common odds ratio of the association between donor’s sex and the survival status of the infant, after controlling for severity (30 Points).
Manually calculate a common odds ratio to test the hypothesis of no association between donor’s sex and the survival status of the infant, after the inclusion of the variable severity using the common odds ratio (10 Points).
Interpret the results. How does the common odds ratio differ from the simple odds ratio computed in part 1? What effect might it have on your decision from part 1 to reject or fail to reject the null hypothesis? (10 Points).
Why is it important to know the effect of severity on the association of gender and survival? (10 Points)
Perform a simple logistic regression using SPSS and the Week 6 Dataset (SPSS document). Answer the following questions based on your SPSS output (30 Points)
Are the results of the simple logistic regression similar to or different from the results of the simple odds ratio (10 Points)?
How are they similar or different? Include output from SPSS and an interpretation of the OR and confidence intervals in your response (10 Points).
What can you do using logistic regression to duplicate the results from part 2 of this application (the use of CMH for common odds) (10 Points)?
Joshua's garden and chicken wire.
Joshua
has decided to convert part of his back yard into a garden. He knows from his neighbor’s experience that
...
Joshua's garden and chicken wire.
Joshua
has decided to convert part of his back yard into a garden. He knows from his neighbor’s experience that
he needs to fence in the garden to keep the animals out. At the hardware store, he buys 200 feet of
chicken wire. After he gets home he unrolls
the wire, he finds to his surprise that there are many different sizes gardens
that he can make with 200 feet of fencing.
He decided that he wants to get the largest garden from 200 feet of
fencing. What are the dimensions of his
garden? I also need to know what if he used "n" amount of chicken wire..
MCT 4 Colorado State University Global Campus Rental Condition Research Paper
Option #2: Rental Condition
Aardvark Auto Rental rents vehicles. Each day Aardvark Automotive
Rental keeps track of whe ...
MCT 4 Colorado State University Global Campus Rental Condition Research Paper
Option #2: Rental Condition
Aardvark Auto Rental rents vehicles. Each day Aardvark Automotive
Rental keeps track of whether its SUVs were returned in "failing"
condition. Aardvark must use more of its resources to restore each SUV
with a "failing" returned condition. Aardvark rents an average of five
SUVs each day. The condition of returned SUVs is recorded for many days
in which five SUVs were rented.Download the file titled SUV Failures. It contains a scatter plot of
the number of failures versus frequency. To compare the results to the
binomial distribution, complete the following:
Explain why SUV rental condition scenario can be a binomial experiment.
Using the SUV Failure scatter plot, construct a frequency distribution for the number of failures.
Compute the mean number of failures. The formula for the mean is as follows:
∑
(
x
⋅
f
)
∑
f
The terms x represent the total number of failures (0, 1, 2, 3, 4,
5) and f is the corresponding frequency (number of days where xᵢ
failures occurred). Explain what the numerical result means.
From the frequency distribution, construct the corresponding
relative frequency distribution.Explain why the relative frequency
distribution table is a probability distribution.Then, use Excel to
create a scatter plot of the probability distribution:Select the two
columns of the probability distribution. Click on INSERT, and then go to
the Charts area and select Scatter. Then choose the first Scatter chart
(the one without lines connecting).
Using the frequency distribution, what is the SUV failure average?
In part 3, note that the numerator in the formula for the mean is the
total number of failures. The total number of trials is the denominator
of the formula for the mean multiplied by 5. What does this average
mean?
The Binomial Distribution is uniquely determined by n, the number of
trials, and p, the probability of "success" on each trial. Using Excel,
construct the Binomial Probability Distribution for five trials, n, and
probability of success, p, as the SUV failure average in part 5. Here
is an explanation of the BINOM.DIST function in Excel: https://support.office.com/en-ie/article/BINOM-DIST-function-c5ae37b6-f39c-4be2-94c2-509a1480770c?ui=en-USrs=en-IEad=I (Links to an external site.)
For example, In Excel=BINOM.DIST(7,15,0.7, FALSE)represents the probability of 7 successes out of 15 (n) trials. The 0.7 is the probability of success, p.Using the above value of n=5 with probability of success, p, as the
SUV failure average in part 5, what is the probability of at least three
SUV failures?
Using the formula for the mean of the Binomial Distribution, what is the mean number of failures in part 6 above?
In Excel, create a scatter plot for the Binomial Distribution. The instructions for creating a scatter plot are in part 4 above.
Use the results above to compare the probability distribution of SUV
failures and the Binomial Distribution. Compare the means in parts 4
and 6, too.
If the probability distribution of SUV failures and the Binomial Distribution differ, explain why that is so.
Do you think the Binomial Distribution is a good model for the SUV failure scenario? Why or why not?
How can Aardvark Auto Rental use the binomial distribution to approximate SUV failures?
In what other scenarios can Aardvark Auto Rental use the Binomial Distribution? Explain.
Write a report that adheres to the formatting and APA expectations outlined on the CSU Global Writing Center (Links to an external site.). As with all written assignments at CSU Global, you should have in-text citations and a reference page.Submit your Excel file in addition to your report.Requirements:
The 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 (Links to an external site.) 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, 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
the Word document 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. Your conclusion should emanate from (be aligned with)
your findings.
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 Writing Center (Links to an external site.). A short summary containing guidelines for paper formatting, citations, and references is contained in the New Sample APA Paper (Links to an external site.). In addition, information in the CSU Global Library (Links to an external site.) has many helpful areas (Writing Center, Writing Tips, Template Examples/Papers Essays, and others).
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