The following MINITAB output presents the results of a hypothesis test for the difference μX μY between

The following MINITAB output presents the results of a hypothesis test for the difference μX ˆ’ μY between two population means. Some of the numbers are missing.

a. Fill in the missing numbers for (i) and (ii).
b. The output presents a Student's t test. Compute the P-value using a z test. Are the two results similar?
c. Use the output and an appropriate table to compute a 98% confidence interval for μX ˆ’ μY based on the z statistic.

Transcribed Image Text:

Two-sample T for X Vs Y Mean StDev SE Mean 23.3 X 78 Y 63 20.63 1.26 3.02 Difference mu (X)mu (Y) Estimate for difference: 2.670 95% CI for difference: (0.05472, 5.2853) T-Test of difference 0 (vs not T-Value 2.03 P-Valu 0.045 DF 90