Question: Independent random samples selected from two normal populations produced the following sample means and LO5 standard deviations: Sample 1 Sample 2 n1 = 12 n2

Independent random samples selected from two normal populations produced the following sample means and LO5 standard deviations:

Sample 1 Sample 2 n1 = 12 n2 = 17 x1 = 3.4 x2 = 5.9 s1 = 4.8 s2 = 3.4

a. Assuming equal variances, conduct the test H0: 1m1 - m22 = 0 against Ha: 1m1 - m22  0 using a = .05.

b. Find and interpret the 95% confidence interval for 1m1 - m22.

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