Compute the pooled estimate of the population variance

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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 the audit staff. She collected the following sample information.

Sales ($) 130 136 147 161 132 147

Audit ($) 131 103 132 132 140 107 132

At the 0.05 significance level, can she conclude that the mean daily expenses are greater for the sales staff than the audit staff?

a. State the decision rule. (Round your answer to 3 decimal places.)

b. Compute the pooled estimate of the population variance. (Round your answer to 2 decimal places.)

c. Compute the test statistic. (Round your answer to 3 decimal places.)

d. State your decision about the null hypothesis.

e. Estimate the p-value. (Round your answers to 3 decimal places.)

Reference no: EM131482324

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