The following MINITAB output presents the results of a hypothesis test for the difference Hx - Hy between two population means. Paired T for X - Y Mean StDev SE Mean 12 134.233 68.376 19.739 12 100.601 94.583 27.304 Difference 12 33.6316 59.5113 17.1794 95% lower bound for mean difference: 2.7793 T-Test of mean difference = 0 (vs > 0): T-Value = 1.96 P-Value = 0.038 Is this a one-tailed or two-tailed test? What is the null hypothesis? Can H, be rejected at the 1% level? How can you tell? a. b. C. d. Use the output and an appropriate table to compute a 98% confidence interval for µx Hy.

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Author:Amos Gilat
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The following MINITAB output presents the results of a hypothesis test for the difference
Hx - Hy between two population means.
Paired T for X - Y
Mean
StDev
SE Mean
12
134.233
68.376
19.739
12
100.601
94.583
27.304
Difference
12
33.6316
59.5113
17.1794
95% lower bound for mean difference: 2.7793
T-Test of mean difference = 0 (vs > 0): T-Value = 1.96 P-Value = 0.038
Is this a one-tailed or two-tailed test?
What is the null hypothesis?
Can H, be rejected at the 1% level? How can you tell?
a.
b.
C.
d.
Use the output and an appropriate table to compute a 98% confidence interval for µx
Hy.
Transcribed Image Text:The following MINITAB output presents the results of a hypothesis test for the difference Hx - Hy between two population means. Paired T for X - Y Mean StDev SE Mean 12 134.233 68.376 19.739 12 100.601 94.583 27.304 Difference 12 33.6316 59.5113 17.1794 95% lower bound for mean difference: 2.7793 T-Test of mean difference = 0 (vs > 0): T-Value = 1.96 P-Value = 0.038 Is this a one-tailed or two-tailed test? What is the null hypothesis? Can H, be rejected at the 1% level? How can you tell? a. b. C. d. Use the output and an appropriate table to compute a 98% confidence interval for µx Hy.
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