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Author Question: The following information regarding the yearly salaries (in $1,000) of CEOs in 2010 and 2009 are ... (Read 40 times)

dhsndn

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on: Mar 25, 2023

Question 1

The following information regarding the number of semester hours taken from random samples of day and evening students is provided.

 

 

Day

Evening

16

12

s

4

2

n

140

160


Develop a 95% confidence interval estimate for the difference between the mean semester hours taken by the two groups of students.



Question 2

The following information regarding the yearly salaries (in $1,000) of CEO’s in 2010 and 2009 are provided.
 

 

Year 2010

Year 2009

Sample size

190

145

Sample Mean

560

540

Population Standard Deviation

80

90


 

a.At 95% confidence, perform a test to determine if there has been a significant increase in the salaries of CEO’s. Use the Critical Value Approach.
b.Compute the p-value.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by dhsndn on Mar 25, 2023

sadoniam

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Reply #1 on: Mar 25, 2023
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dhsndn

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Reply 2 on: Mar 25, 2023
Wow, this really help

kilada

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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