what is the test statistic in terms of Alloy1-Alloy2?
102 parts made from alloy 1 and 50 parts made from alloy 2 were subjected to stress tests. 18 parts fromalloy 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 (1:0.05?Assume independent samples.
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