Subject: Probability and Statistics

Topic: Null Hypothesis

****

3. Which of the following statements is true? a. The null hypothesis Is rejected because the computed z-value is located outside the acceptance region. b. The null hypothesis Is accepted because the computed z-value Is located inside the acceptance region. c. The null hypothesis is rejected because there is no enough evidence to reject It. d. None of the above. 4. What will be the decision given a = 0.05, z = 2.1, two-talled? a. Accept the null hypothesis c. No decision will be made. b. Reject the null hypothesis d. Reject the alternative hypothesis 5. What will be the decision given a = 0.05, z = -1.50, two-tailed? a. The null hypothesis is rejected because the computed z-value is located outside the acceptance value. b. The alternative hypothesis is accepted. c. The null hypothesis is accepted because the computed z-value is located inside the acceptance value. d. No decision will be made.1. Compute the value of z. Choose the letter of your answer inside the box. 1. X = 95, u = 90 and n = 100 2. X = 90. H = 85, s = 9. n = 121 3. X = 55, U = 60, s = 4. n = 49.6 4. X = 95, u = 100, o = 15, n = 140 5. X = 60, H = 64, s = 6, n = 81 A. 0.10 B. 10 C. -3.94 D. 8.80 E. 6.11 F. -7.50 G. -8.80 11. Multiple Choice. Choose the letter of the best answer. 1. What does it implies when we reject the null hypothesis? a. There is a significant difference between means. b. There is no significant difference between means. c. Both a and b d. None of the above. 2. Reject Ho if the computed test statistic is a. equal to the critical value c. positive critical value b. negative critical value d. both b and c CONTINUATION AT THE BACK