Math 240

A competency test is modified so that the proportion of test-takers that pass is more than 75%. A sample of test-takers is collected to determine if the proportion of passers is greater than 75%. Th sample are shown below. Competency test sample passed 86 Observations 100 Confidence Level 0.99 Critical value 2.33 test statistic (z) 2.54 p-value 0.0055 p = EX: 1.234 $ -3 -2 -1 3 Z = Ex: 1.234 n = Ex: 9 Number passed = Ex: 9 Sample proportion p = Ex: 1.234 S