Question

Independent random samples selected from two normal populations produced the sample means and standard deviations shown to the right. a. Assuming equal variances, conduct the test Ho (H1-H2) = 0 against Hy: (H1-H2) #0 using a = 0.10. b. Find and interpret the 90% confidence interval for (H1-H2) Sample 1 Sample 2 ny - 18 ng - 11 X2 7.8 X = 5.6 Sy = 3.1 82 4.7 a. Find the test statistic, The test statistic is (Round to two decimal places as needed.) Find the p-value. The p-value is (Round to three decimal places as needed.) State the conclusion. Choose the correct answer below. O A. Reject H - There is sufficient evidence that the means differ. OB. Do not reject Ho. There is sufficient evidence that the means differ. OC. Do not reject Hy. There is insufficient evidence that the means differ. OD. Reject H. There is insufficient evidence that the means differ. b. The 90% confidence interval for (41-42) i LD. (Round to two decimal places as needed.) Interpret the confidence interval With 90% confidence, the difference in the means of the two populations is estimated to fall this interval. There ere is evidence to indicate that (H, -->) differs from O because the interval 0. Click to select your answer(s). ?

Answer 1