Question

1. A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute. The quality assurance department found in a sample of 50 customers that the mean waiting time was 2.75 minutes. At the .01 significance level, can we conclude that the mean waiting time is less than 3 minutes?

Name: 1. A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute. The quality assurance department found in a sample of 50 customers that the mean waiting time was 2.75 minutes. At the .01 significance level, can we conclude that the mean waiting time is less than 3 minutes?
Uploaded: 2022-04-25T19:54:23-08:00
Duration: 2 min 28 s
Channel: David Nguyen
Description: 1. A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute. The quality assurance department found in a sample of 50 customers that the mean waiting time was 2.75 minutes. At the .01 significance level, can we conclude that the mean waiting time is less than 3 minutes?

          1. A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute. The quality assurance department found in a sample of 50 customers that the mean waiting time was 2.75 minutes. At the .01 significance level, can we conclude that the mean waiting time is less than 3 minutes?

1. A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute. The quality assurance department found in a sample of 50 customers that the mean waiting time was 2.75 minutes. At the .01 significance level, can we conclude that the mean waiting time is less than 3 minutes?

Added by Jennifer C.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert David Nguyen

04/25/2022

Step 1

Null Hypothesis (H0): μ = 3 minutes Alternative Hypothesis (H1): μ < 3 minutes Show more…

Show all steps

Thanks for your feedback!

restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute. The quality assurance department found in a sample of 50 customers that the mean waiting time was 2.75 minutes. At the .01 significance level, can we conclude that the mean waiting time is less than 3 minutes?