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Author Question: Exhibit 10-4The following information was obtained from independent random samples.Assume normally ... (Read 64 times)

warrenjean01

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on: Mar 25, 2023

Question 1

Exhibit 10-4
The following information was obtained from independent random samples.
Assume normally distributed populations with equal variances.

 

Sample 1

Sample 2

Sample Mean

45

42

Sample Variance

85

90

Sample Size

10

12


Refer to Exhibit 10-4. The degrees of freedom for the t-distribution are


◦

22


◦

23


◦

24


◦

19



Question 2

Exhibit 10-4
The following information was obtained from independent random samples.
Assume normally distributed populations with equal variances.

 

Sample 1

Sample 2

Sample Mean

45

42

Sample Variance

85

90

Sample Size

10

12


Refer to Exhibit 10-4. The 95% confidence interval for the difference between the two population means is


◦

-5.372 to 11.372


◦

-5 to 3


◦

-4.86 to 10.86


◦

-2.65 to 8.65

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by warrenjean01 on Mar 25, 2023

annaelena92

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Reply #1 on: Mar 25, 2023
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warrenjean01

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

AISCAMPING

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

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