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Author Question: A random sample of 49 lunch customers was taken at a restaurant. The average amount of time the ... (Read 71 times)

sreghbsidhgjbndskijgnio

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on: Mar 25, 2023

A random sample of 49 lunch customers was taken at a restaurant. The average amount of time the customers in the sample stayed in the restaurant was 45 minutes with a standard deviation of 14 minutes.

a.Compute the standard error of the mean.
b.With a .95 probability, what statement can be made about the size of the margin of error?
c.Construct a 95% confidence interval for the true average amount of time customers spent in the restaurant.
d.With a .95 probability, how large of a sample would have to be taken to provide a margin of error of 2.5 minutes or less?

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

kaelamcrone

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Reply #1 on: Mar 25, 2023
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sreghbsidhgjbndskijgnio

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

irishcancer18

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Reply 3 on: Yesterday
:D TYSM

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