A corporation randomly selects 150 salespeople and finds that 66% who have never taken a self-improvement course would like such a course. The firm did a similar study 10 years ago in which 60% of a random sample of 160 salespeople wanted a self-improvement course. The groups are assumed to be independent random samples. Let p,and p represent the true proportion of workers who would like to attend a self-improvement course in the recent study and the past study, respectively. 20. Referring to that information, if the firm wanted to test whether this proportion has changed from the previous study, which represents the relevant hypotheses for two tailed? 1) Ho: P₁ - P₂ - 0 versus H₁: P₁ P₂ 0 2) HP₁-P₂0 versus H₁: P₁-P₂-0 3) Ho: P₁ - P₂ S 0 versus H₁: P₁-P₂ >0 4) H: P₁ - P₂ 2 0 versus H₁: P₁ - P₂ <0 5) H₁:0=o and H₁:a o 21. Referring to that information, if the firm wanted to test whether a greater proportion of workers would currently like to attend a self-improvement course than in the past, which represents the relevant hypotheses? 1) Ho: P₁-P₂=0 versus H₁: P₁ P₂ 0 2) Ho P₁ P₂ 0 versus H₁: P₁-P₂ = 0 3) H.: P₁-P₂ ≤ 0 versus H: P₁-P₂> 0 4) H: P₁ P₂ 20 versus H₁: P₁-P₂ <0 5) H₁:0=o and H₁:a o 22. Referring to that information, what is the unbiased point estimate for the difference between the two population proportions? 1) 0.06 2)0.10 3) 0.15 4)0.12 5) 0.22 23. Referring to that information, what is/are the critical value(s) when performing a Z test on whether population proportions are different if a -0.05? 1) ±1.645 2) 1.96 3) 12.33 4) 12.08 5) -1.96 24. Referring to that information, what is the value of the test statistic to use in evaluating the alternative hypothesis that there is a difference in the two population proportions? 1) 4.335 2) 1.96 3) 1.093 4) 0.06 5) 0.0 25. Referring to that information, the company tests to determine at the 0.05 level whether the population proportion has changed from the previous study. Which of the following is most correct? a) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self- improvement course has changed over the intervening 10 years. b) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has not changed over the intervening 10 years. c) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self- improvement course has increased over the intervening 10 years. d) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has increased over the intervening 10 years.
A corporation randomly selects 150 salespeople and finds that 66% who have never taken a self-improvement course would like such a course. The firm did a similar study 10 years ago in which 60% of a random sample of 160 salespeople wanted a self-improvement course. The groups are assumed to be independent random samples. Let p,and p represent the true proportion of workers who would like to attend a self-improvement course in the recent study and the past study, respectively. 20. Referring to that information, if the firm wanted to test whether this proportion has changed from the previous study, which represents the relevant hypotheses for two tailed? 1) Ho: P₁ - P₂ - 0 versus H₁: P₁ P₂ 0 2) HP₁-P₂0 versus H₁: P₁-P₂-0 3) Ho: P₁ - P₂ S 0 versus H₁: P₁-P₂ >0 4) H: P₁ - P₂ 2 0 versus H₁: P₁ - P₂ <0 5) H₁:0=o and H₁:a o 21. Referring to that information, if the firm wanted to test whether a greater proportion of workers would currently like to attend a self-improvement course than in the past, which represents the relevant hypotheses? 1) Ho: P₁-P₂=0 versus H₁: P₁ P₂ 0 2) Ho P₁ P₂ 0 versus H₁: P₁-P₂ = 0 3) H.: P₁-P₂ ≤ 0 versus H: P₁-P₂> 0 4) H: P₁ P₂ 20 versus H₁: P₁-P₂ <0 5) H₁:0=o and H₁:a o 22. Referring to that information, what is the unbiased point estimate for the difference between the two population proportions? 1) 0.06 2)0.10 3) 0.15 4)0.12 5) 0.22 23. Referring to that information, what is/are the critical value(s) when performing a Z test on whether population proportions are different if a -0.05? 1) ±1.645 2) 1.96 3) 12.33 4) 12.08 5) -1.96 24. Referring to that information, what is the value of the test statistic to use in evaluating the alternative hypothesis that there is a difference in the two population proportions? 1) 4.335 2) 1.96 3) 1.093 4) 0.06 5) 0.0 25. Referring to that information, the company tests to determine at the 0.05 level whether the population proportion has changed from the previous study. Which of the following is most correct? a) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self- improvement course has changed over the intervening 10 years. b) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has not changed over the intervening 10 years. c) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self- improvement course has increased over the intervening 10 years. d) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has increased over the intervening 10 years.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
Related questions
Question
Do 23,24, 25 , and dont do handwritten and explain the concept properly and also use excel Formula not the statistics tables to find value of anything
![A corporation randomly selects 150 salespeople and finds that 66% who have never taken a self-improvement
course would like such a course. The firm did a similar study 10 years ago in which 60% of a random sample of 160
salespeople wanted a self-improvement course. The groups are assumed to be independent random samples. Let p,and p₂
represent the true proportion of workers who would like to attend a self-improvement course in the recent study and the
past study, respectively.
20. Referring to that information, if the firm wanted to test whether this proportion has changed from the previous study,
which represents the relevant hypotheses for two tailed?
1) H₂: P₁ - P₂ -0 versus H₂: p₁ - P₂02) Ho P₁ P₂0 versus H₂: P₁-P₂-0
3) Ho: P₁-P₂ S 0 versus H₁: P₁-P₂>04) H₁: P.-P₂ 20 versus H₁: p₁-P₂ <0
5) H₁:a =o and H₁:a #a
21. Referring to that information,, if the firm wanted to test whether a greater proportion of workers would currently like to
attend a self-improvement course than in the past, which represents the relevant hypotheses?
1) Ho: P₁ - P₂ =0 versus H₁: P: - P₂ 0 2) HP₁-P₂0 versus H₁: P₁-P₂ = 0
3) Ho: P₁ - P₂ S 0 versus H: P₁-P₂> 0 4) H: P₁ - P₂20 versus H₁: P₁ - P₂ <0
5) Hoo and H₁ : 0 +o
22. Referring to that information, what is the unbiased point estimate for the difference between the two population
proportions?
1) 0.06
2)0.10
3) 0.15
4)0.12
5) 0.22
23. Referring to that information, what is/are the critical value(s) when performing a Z test on whether population
proportions are different if a
= 0.05?
1) £1.645
2) 11.96
3) 12.33
4) £2.08
5) -1.96
24. Referring to that information, what is the value of the test statistic to use in evaluating the alternative hypothesis that
there is a difference in the two population proportions?
1) 4.335
2)1.96
3) 1.093
4) 0.06
5) 0.0
25. Referring to that information, the company tests to determine at the 0.05 level whether the population proportion has
changed from the previous study. Which of the following is most correct?
a) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self-
improvement course has changed over the intervening 10 years.
b) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a
self-improvement course has not changed over the intervening 10 years.
c) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self-
improvement course has increased over the intervening 10 years.
d) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a
self-improvement course has increased over the intervening 10 years.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0cfdbee5-edec-471d-b820-a938a8aae01f%2F0d8d6d31-7a7b-458c-ba28-92a4babea0d3%2Fva0ucml_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A corporation randomly selects 150 salespeople and finds that 66% who have never taken a self-improvement
course would like such a course. The firm did a similar study 10 years ago in which 60% of a random sample of 160
salespeople wanted a self-improvement course. The groups are assumed to be independent random samples. Let p,and p₂
represent the true proportion of workers who would like to attend a self-improvement course in the recent study and the
past study, respectively.
20. Referring to that information, if the firm wanted to test whether this proportion has changed from the previous study,
which represents the relevant hypotheses for two tailed?
1) H₂: P₁ - P₂ -0 versus H₂: p₁ - P₂02) Ho P₁ P₂0 versus H₂: P₁-P₂-0
3) Ho: P₁-P₂ S 0 versus H₁: P₁-P₂>04) H₁: P.-P₂ 20 versus H₁: p₁-P₂ <0
5) H₁:a =o and H₁:a #a
21. Referring to that information,, if the firm wanted to test whether a greater proportion of workers would currently like to
attend a self-improvement course than in the past, which represents the relevant hypotheses?
1) Ho: P₁ - P₂ =0 versus H₁: P: - P₂ 0 2) HP₁-P₂0 versus H₁: P₁-P₂ = 0
3) Ho: P₁ - P₂ S 0 versus H: P₁-P₂> 0 4) H: P₁ - P₂20 versus H₁: P₁ - P₂ <0
5) Hoo and H₁ : 0 +o
22. Referring to that information, what is the unbiased point estimate for the difference between the two population
proportions?
1) 0.06
2)0.10
3) 0.15
4)0.12
5) 0.22
23. Referring to that information, what is/are the critical value(s) when performing a Z test on whether population
proportions are different if a
= 0.05?
1) £1.645
2) 11.96
3) 12.33
4) £2.08
5) -1.96
24. Referring to that information, what is the value of the test statistic to use in evaluating the alternative hypothesis that
there is a difference in the two population proportions?
1) 4.335
2)1.96
3) 1.093
4) 0.06
5) 0.0
25. Referring to that information, the company tests to determine at the 0.05 level whether the population proportion has
changed from the previous study. Which of the following is most correct?
a) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self-
improvement course has changed over the intervening 10 years.
b) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a
self-improvement course has not changed over the intervening 10 years.
c) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self-
improvement course has increased over the intervening 10 years.
d) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a
self-improvement course has increased over the intervening 10 years.
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