Grocery store customers do not like waiting in the check-out line. A particular grocery store chain would like to insure that, on average, customers do not have to wait in line longer than 5 minutes. To test this, customers were randomly selected and the time they had to wait in the check-out line was recorded. Sample results are provided below: Sample size: 51 customers Sample mean: 5.9 minutes Sample standard deviation: 2.8 minutes Your task is to complete the appropriate Hypothesis Test to determine if the mean check-out line wait time is more than 5 minutes. Use \alpha =.05 throughout.
Grocery store customers do not like waiting in the check-out line. A particular grocery store chain would like to insure that, on average, customers do not have to wait in line longer than 5 minutes. To test this, customers were randomly selected and the time they had to wait in the check-out line was recorded. Sample results are provided below: Sample size: 51 customers Sample mean: 5.9 minutes Sample standard deviation: 2.8 minutes Your task is to complete the appropriate Hypothesis Test to determine if the mean check-out line wait time is more than 5 minutes. Use \alpha =.05 throughout.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Grocery store customers do not like waiting in the check-out line. A particular grocery store chain would like to insure that, on average, customers do not have to wait in line longer than 5 minutes. To test this, customers were randomly selected and the time they had to wait in the check-out line was recorded. Sample results are provided below:
Sample size : 51 customers
Sample mean: 5.9 minutes
Sample standard deviation: 2.8 minutes
Your task is to complete the appropriate Hypothesis Test to determine if the mean check-out line wait time is more than 5 minutes. Use \alpha =.05 throughout.
Step 1: State the null and alternative hypotheses that you would use to test if the mean check-out line wait time
is more than 5 minutes.
Step 2: What distribution/model should be use to conduct this hypothesis test?
(If using statistical features on your calculator then what test did you use?)
Step 3: Provide the Test Statistic.
Step 4: Provide the p-value.
Step 5: Should the null hypothesis be rejected? Yes or No?
Step 6: Write a sentence summarizing, in the context of this question, your result.
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