Homework SourseA sample of grocery store receipts has a mean of 157 and a s
A sample of grocery store receipts has a mean of $157 and a standard error of the mean of $4.77. Your job is to decide whether or not the mean of sales at this grocery store is different from $150.
Based on this test, you found that your test statistic does not fall in the rejection region, so you _______________ the null hypothesis and conclude that ________________.
A.) fail to reject; the mean of the populatin our sample came from is not $150
B.) fail to reject; the mean of the population our sample came from is $150
C.) reject; the mean of the population our sample came from is not $150
D.) reject; the mean of the population our sample came from is $150
| A.) fail to reject; the mean of the populatin our sample came from is not $150 | ||
| B.) fail to reject; the mean of the population our sample came from is $150 | ||
| C.) reject; the mean of the population our sample came from is not $150 | ||
| D.) reject; the mean of the population our sample came from is $150 |
Solution
As the z score does not fall in the rejection region, we do not reject Ho.
As Ho: u = 150, thus,
OPTION B: fail to reject; the mean of the population our sample came from is $150 [ANSWER]
