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Author Question: Exhibit 8-3The manager of a grocery store has taken a random sample of 100 customers. The average ... (Read 79 times)

erikka246

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on: Mar 25, 2023

Exhibit 8-3
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customers to check out was 3.0 minutes. It is known that the standard deviation of the population of checkout times is one minute.


Refer to Exhibit 8-3. The 95% confidence interval for the true average checkout time (in minutes) is


◦

3:00 to 5:00


◦

1.36 to 4.64


◦

1.00 to 5.00


◦

2.804 to 3.196

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by erikka246 on Mar 25, 2023

koung719

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Reply #1 on: Mar 25, 2023
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erikka246

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

fatboyy09

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Reply 3 on: Yesterday
Wow, this really help

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