Question

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 ($)	125	137	147	162	136	142
Audit ($)	125	98	128	135	145	117	141

At the 0.050 significance level, can she conclude that the mean daily expenses are greater for the sales staff than the audit staff?

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

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

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

3. State your decision about the null hypothesis.

• Reject H₀: μ_s ≤ μ_a

• Do not reject H₀: μ_s ≤ μ_a

5. Estimate the p-value.

• Between 0.025 And 0.05

• Between 0.001 And 0.005

• Between 0.005 And 0.01

• Between 0.01 And 0.025

Answer 1

check the calculations, tell me if you have any doubt. Here degrees of freedom is 6+7-2=11.