102 parts made from alloy 1 and 50 parts made from alloy 2 were subjected to stress tests. 18 parts from alloy 1 and 14 parts from alloy 2 did not

102 parts made from alloy 1 and 50 parts made from alloy 2 were subjected to stress tests. 18 parts from alloy 1 and 14 parts from alloy 2 did not pass the test. Can we reject the hypothesis that the proportion of nonpassing parts from alloy 1 is at least as large as the proportion of nonpassing parts from alloy 2 at (1:13.05? Assume independent samples. Question 1 For the hypothesis stated above [in terms of alloy1 — alloy2]: Part A What is the decision rule? Fill in only E of the following statements. If the hypothesis is one tailed: If the hypothesis is two tailed: ReiectHoif ‘- Part B what is the test statistic? |_|I Question 2 Find the 99% confidence interval [in terms of alloy2 —alloy1:|. Left Endpoint = Right Endpoint = _