Homework SourseA national grocers magazine reports the typical shopper spen
A national grocer’s magazine reports the typical shopper spends 6 minutes in line waiting to check out. A sample of 16 shoppers at the local Farmer Jack’s showed a mean of 5.1 minutes with a standard deviation of 2.8 minutes.
Solution
Null hypothesis: check out time = 6 mts
Alternative hypothesis: The average is not 6 mts
The magazing report is valid
| Data | |
| Null Hypothesis m= | 6 |
| Level of Significance | 0.05 |
| Sample Size | 16 |
| Sample Mean | 5.1 |
| Sample Standard Deviation | 2.8 |
| Intermediate Calculations | |
| Standard Error of the Mean | 0.7 |
| Degrees of Freedom | 15 |
| t Test Statistic | -1.285714286 |
| Two-Tail Test | |
| Lower Critical Value | -2.131449536 |
| Upper Critical Value | 2.131449536 |
| p-Value | 0.218037796 |
| Do not reject the null hypothesis |
