Question
The owner of a grocery store wanted to determine whether the average customer bought more than$100 worth of food. She randomly selected20 receipts and identifiedthe
The owner of a grocery store wanted to determine whether the average customer bought more than$100 worth of food.
She randomly selected20 receipts and identifiedthe total spentby each customer.
The totals (rounded to the nearest dollar) are given below.
The ownerconducts a one-mean hypothesisat the5% significance level, to test if the average customer bought more than$100 worth of food.
For this test:H0 :=$100
Ha:>$100, which is a right-tailed test.
Amount(in dollars) ofmoney spent on foodis given below.
99
119
59
99
159
89
115
149
99
105
169
79
115
65
119
79
109
119
89
149
Use Excel to test whether the mean is greater than$100.
Identify the test statistic,t and p-value from the Excel output,rounding to twodecimal places.
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Advanced Engineering Mathematics
Authors: ERWIN KREYSZIG
9th Edition
0471488852, 978-0471488859
