the rejection region.

the rejection region. 12. The average test score of entire school is 7B. The random 01 32 standard ne test score of the sarnple is 84. Find the z-value. B. 3.778 c. 3877 For items 13-15, use the problem below. The average score in the entrance exarnination in Math.ernatica at SRNHS is 80 With a standard deviation of I O. A random sample of 40 students taken this year's examinees it was found the mean score Of 84. level of significance is 0.05. '"o " 13. Which of these are the critical values? B. 1.97 A. 1.96 c. 1.98 14. Using the Z- test formula, what is the computed test-statistic? L, CO 2.52 B. 2.51 A. 2.50 15. Which is the appropriate conclusion about the hypothesized and the sample mean? A. The hypothesized mean is greater than the sample mean. B. There is no relationship between the hypothesized and the sample mean. o.' *1.99 o. '263 C. There is significant difference between the hypothesized mean and the sample mean. D. There is no significant difference between the hypothesized mean and sunp\e mean. a,