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Ms. Lisa Monnin is the budget director for Nexus Media Inc. She would like to compare the daily travel expenses for the sales staff and
Ms. Lisa Monnin is the budget director for Nexus Media Inc. She would like to compare the daily travel expenses for the sales staff and the audit staff. She collected the following sample information. |
Sales ($) | 131 | 135 | 146 | 165 | 136 | 142 | |
Audit ($) | 130 | 102 | 129 | 143 | 149 | 120 | 139 |
At the .10 significance level, can she conclude that the mean daily expenses are greater for the sales staff than the audit staff? |
Click here for the Excel Data File |
1. | State the decision rule. (Round your answer to 3 decimal places.) |
Reject H0 if t > |
2. | Compute the pooled estimate of the population variance. (Round your answer to 2 decimal places.) |
Pooled variance= |
3. | Compute the test statistic. (Round your answer to 3 decimal places.) |
Value of the test statistic = |
4. | State your decision about the null hypothesis. |
H0 : s a |
5. | Estimate the p-value. (Round your answers to 3 decimal places.) |
p-value |
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