Question 3 Independent random samples selected from two normal populations produced the following sample means and standard deviations: Sample 1 n = 17 X = 5.4 S = 3.4 a. Assuming - Sample 2 n2=12 X2 = 7.9 $2 = 4.8 equal variances, conduct the test = 0 against H () 0 using Ho: ()= .05. b. Find and interpret the 95% confidence interval for (14-12).