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Author Question: Samples were selected from three populations. The data obtained are shown below.Sample 1Sample ... (Read 78 times)

jenniferbaugh1984

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on: Mar 25, 2023

Question 1

Samples of employees of Companies A and B provided the following information regarding the ages of employees.

 

Company A

Company B

Sample Size

32

36

Average Age

42

47

Variance

16

36


Develop a 97% confidence interval for the difference between the average ages of the employees of the two companies.



Question 2

Samples were selected from three populations. The data obtained are shown below.

 

 

Sample 1

Sample 2

Sample 3

 

10

16

15

 

13

14

18

 

12

15

 
 

13

  
    
    
    
Sample Mean

12

15

16.5

Sample Variance

2.0

1.0

4.5


 

a.Compute the overall mean .
b.Set up an ANOVA table for this problem.
c.At 95% confidence, test to determine whether there is a significant difference in the means of the three populations. Use both the critical and p-value approaches.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by jenniferbaugh1984 on Mar 25, 2023

lola.jashay

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Reply #1 on: Mar 25, 2023
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jenniferbaugh1984

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Reply 2 on: Mar 25, 2023
YES! Correct, THANKS for helping me on my review

dreamfighter72

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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