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Explanation & Answer
27. x=7
y=sqrt(49+49)=7sqrt(2)
y=7sqrt(2)
28. cos 60 =a/8
1/2=a/8
a=4
sin 60 = b/8
sqrt(3)/2=b/8
b=4sqrt(3)
c=sqrt(192-48)=sqrt(144)=12
c=12
29. 6r=180
r=30
2r=60
3r=90
cos 60 =6/s
s=6/ cos 60 = 12
s=12
t=sqrt(144-36)=sqrt(108)
t=6sqrt(3)
30. 2n+90=180
n=45
a=10
cos 45 =b/10
b=10cos 45 =10*sqrt(2)/2
b=5sqrt(2)
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Argosy University Statistics of Behavioral Science Database Worksheet
Creating a Database using Microsoft ExcelCreate a new Microsoft Excel database in which you will be able to enter the foll ...
Argosy University Statistics of Behavioral Science Database Worksheet
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Create visual displays of data
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Create visual displays of data
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Harvard University Design Method Worksheet
Answer the following problems showing your work and explaining (or analyzing) your results. Submit your work in a typed Mi ...
Harvard University Design Method Worksheet
Answer the following problems showing your work and explaining (or analyzing) your results. Submit your work in a typed Microsoft Word document.
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Simple random sampling
Systematic sampling
Stratified sampling
Cluster sampling
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An education expert is researching teaching methods and wishes to interview teachers from a particular school district. She randomly selects 10 schools from the district and interviews all of the teachers at the selected schools. Does this sampling plan result in a random sample? What type of sample is it? Explain. (2 pts)
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You want to investigate the workplace attitudes concerning new policies that were put into effect. You have funding and support to contact at most 100 people. Choose a design method and discuss the following:
Describe the sample design method you will use and why. (2 pts)
Specify the population and sample group. Will you include everyone who works for the company, certain departments, full or part-time employees, etc.? (2 pts)
Discuss the bias, on the part of both the researcher and participants. (2 pts)
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Why or why not? (2 pts)
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Calculate the test statistic. (2 pts)
Find the P-value. (2 pts)
What is the conclusion? (2 pts)
Calculate a Z score when X = 20, ? = 17, and ? = 3.4. (2 pts)
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Template For Assignment 2
Remove all red-text instructions from this template prior to submission. Save the file as a word document or pdf with the ...
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Remove all red-text instructions from this template prior to submission. Save the file as a word document or pdf with the title “Last Name, First ...
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The purpose of this assignment is to compare basic functions in Excel and SPSS to calculate descriptive statistics and use ...
PUB 550 Grand Canyon University Week 2 Excel and IBM SPSS Statistic Comparative Essay
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Module six
For this discussion, you will be modeling real-world applications using exponential and logarithmic relations. Your task i ...
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Argosy University Statistics of Behavioral Science Database Worksheet
Creating a Database using Microsoft ExcelCreate a new Microsoft Excel database in which you will be able to enter the foll ...
Argosy University Statistics of Behavioral Science Database Worksheet
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Create visual displays of data
You will submit one Word document for this assignment. You will create this Word document by cutting and pasting SPSS outp ...
Create visual displays of data
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Harvard University Design Method Worksheet
Answer the following problems showing your work and explaining (or analyzing) your results. Submit your work in a typed Mi ...
Harvard University Design Method Worksheet
Answer the following problems showing your work and explaining (or analyzing) your results. Submit your work in a typed Microsoft Word document.
Choose one design method from the list below. Using your example, make a list of 2 or 3 advantages and 2 or 3 disadvantages for using the method. (2 pts)
Simple random sampling
Systematic sampling
Stratified sampling
Cluster sampling
The name of each student in a class is written on a separate card. The cards are placed in a bag. Three names are picked from the bag. Identify which type of sampling is used and why. (2 pts)
A phone company obtains an alphabetical list of names of homeowners in a city. They select every 25th person from the list until a sample of 100 is obtained. They then call these 100 people to advertise their services. Does this sampling plan result in a random sample? What type of sample is it? Explain. (2 pts)
The manager of a company wants to investigate job satisfaction among its employees. One morning after a meeting, she talks to all 25 employees who attended. Does this sampling plan result in a random sample? What type of sample is it? Explain. (2 pts)
An education expert is researching teaching methods and wishes to interview teachers from a particular school district. She randomly selects 10 schools from the district and interviews all of the teachers at the selected schools. Does this sampling plan result in a random sample? What type of sample is it? Explain. (2 pts)
Fifty-one sophomore, 42 junior, and 55 senior students are selected from classes with 516, 428, and 551 students respectively. Identify which type of sampling is used and explain your reasoning. (2 pts)
You want to investigate the workplace attitudes concerning new policies that were put into effect. You have funding and support to contact at most 100 people. Choose a design method and discuss the following:
Describe the sample design method you will use and why. (2 pts)
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Discuss the bias, on the part of both the researcher and participants. (2 pts)
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Explain the bias and sampling error in this study. (2 pts)
Should the writer conclude that the housing market is declining based upon this data? (2 pts)
Why or why not? (2 pts)
A homeowner is getting carpet installed. The installer is charging her for 250 square feet. She thinks this is more than the actual space being carpeted. She asks a second installer to measure the space to confirm her doubt. Write the null hypothesis Ho and the alternative hypothesis Ha. (2 pts)
Drug A is the usual treatment for depression in graduate students. Pfizer has a new drug, Drug B, that it thinks may be more effective. You have been hired to design the test program. As part of your project briefing, you decide to explain the logic of statistical testing to the people who are going to be working for you.
Write the research hypothesis and the null hypothesis. (2 pts)
Then construct a table like the one below, displaying the outcomes that would constitute Type I and Type II error. (2 pts)
Write a paragraph explaining which error would be more severe, and why. (2 pts)
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5.95 6.10 5.98 6.01 6.25 5.85 5.91 6.05 5.88 5.91
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State the hypothesis you will test. (2 pts)
Calculate the test statistic. (2 pts)
Find the P-value. (2 pts)
What is the conclusion? (2 pts)
Calculate a Z score when X = 20, ? = 17, and ? = 3.4. (2 pts)
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Tutor O-Rama claims that their services will raise student SAT math scores at least 50 points. The average score on the math portion of the SAT is ?=350 and ?=35. The 100 students who completed the tutoring program had an average score of 385 points.
Is the students’ average score of 385 points significant at the 5% and 1% levels to support Tutor O-Rama’s claim of at least a 50-point increase in the SAT score? (2 pts)
Is the Tutor O-Rama students’ average score of 385 points significantly different at the 5% and 1% levels from the average score of 350 points on the math portion of the SAT? What conclusion can you make, based on your results, about the effectiveness of Tutor O-Rama’s tutoring? (2 pts)
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Template For Assignment 2
Remove all red-text instructions from this template prior to submission. Save the file as a word document or pdf with the ...
Template For Assignment 2
Remove all red-text instructions from this template prior to submission. Save the file as a word document or pdf with the title “Last Name, First ...
PUB 550 Grand Canyon University Week 2 Excel and IBM SPSS Statistic Comparative Essay
The purpose of this assignment is to compare basic functions in Excel and SPSS to calculate descriptive statistics and use ...
PUB 550 Grand Canyon University Week 2 Excel and IBM SPSS Statistic Comparative Essay
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Module six
For this discussion, you will be modeling real-world applications using exponential and logarithmic relations. Your task i ...
Module six
For this discussion, you will be modeling real-world applications using exponential and logarithmic relations. Your task is to complete the following steps:Find or create a data set that represents an exponential relation.Discuss how you determined part (a).Find or create a data set that represents a logarithmic relation.Discuss how you determined part (b).In your responses to peers, compare and contrast your examples with others and reflect on your peers’ examples.Be sure to post an initial, substantive response by Thursday at 11:59 p.m. MST, and respond to two or more peers with substantive responses by Sunday at 11:59 p.m. MST. A substantive initial post answers the question presented completely and/or asks a thoughtful question pertaining to the topic. Substantive peer responses ask a thoughtful question pertaining to the topic and/or answers a question (in detail) posted by another student or the instructor.
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