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Author Question: Exhibit 10-6The management of a department store is interested in estimating the difference between ... (Read 62 times)

hannahmadyronde

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on: Mar 25, 2023

Exhibit 10-6
The management of a department store is interested in estimating the difference between the mean credit purchases of customers using the store's credit card versus those customers using a national major credit card. You are given the following information.

 

 

Store's Card

Major Credit Card

Sample size

64

49

Sample mean

$140

$125

Population standard deviation

$10

$8


Refer to Exhibit 10-6. A 95% confidence interval estimate for the difference between the average purchases of the customers using the two different credit cards is


◦

49 to 64


◦

11.68 to 18.32


◦

125 to 140


◦

8 to 10

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

kaelamcrone

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Reply #1 on: Mar 25, 2023
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hannahmadyronde

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Reply 2 on: Mar 25, 2023
Thanks for the timely response, appreciate it

ttt030911

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Reply 3 on: Yesterday
Wow, this really help

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