Independent random samples from normal populations produced the results shown in the next table Sample 1 Sample 2 1 2 4 2 3 1 2 7 1 7 3 6 2 8 3 9 3 0 a Calculate the pooled estimate of 2 b Do the data provide sufficient evidence to indicate that 2 1 Test using a 10 c Find a 90 confidence interval for (1 2) d Which of the two inferential procedures, the test of hypothesis in part b or the confidence interval in part c, provides more information about (1 2)

Question: Independent random samples from normal populations produced the results shown in the next table. Sample 1 _______________Sample 2 1.2 .............................. 4.2 3.1 .............................. 2.7 1.7

Independent random samples from normal populations produced the results shown in the next table.
Sample 1 _______________Sample 2
1.2 .............................. 4.2
3.1 .............................. 2.7
1.7 .............................. 3.6
2.8 .............................. 3.9
3.0
a. Calculate the pooled estimate of σ2.
b. Do the data provide sufficient evidence to indicate that μ2 > μ1? Test using a = .10.
c. Find a 90% confidence interval for (μ1 - μ2).
d. Which of the two inferential procedures, the test of hypothesis in part b or the confidence interval in part c, provides more information about (μ1 - μ2)?

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