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Author Question: Exhibit 9-4The manager of a grocery store has taken a random sample of 100 customers. The average ... (Read 137 times)

ninaj

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on: Mar 25, 2023

Question 1

Exhibit 9-3

n = 49 = 54.8s = 28H0: μ 50
   Ha: μ> 50

Refer to Exhibit 9-3. The p-value is between


◦

0.01 to 0.025


◦

0.025 to 0.05


◦

.05 to 0.1


◦

0.1 to 0.2



Question 2

Exhibit 9-4
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes with a standard deviation of 0.5 minutes. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes.


Refer to Exhibit 9-4. The test statistic is


◦

1.96


◦

1.64


◦

2.00


◦

0.056

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

marufp

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Reply #1 on: Mar 25, 2023
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ninaj

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

yeungji

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Reply 3 on: Yesterday
Excellent

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