We wish to test the hypotheses Ho: P1-P2 = 0 versus the hypothesis H1: p1 - p2 O at a 5% level of significance. Here, p1 denotes, of all bolts manufactured on Machine A, that fraction that are defective, and p2 denotes, of all bolts manufactured on Machine B, that fraction which consists of defective bolts. In order to test theses hypotheses, we obtain a random sample of 400 bolts manufactured on Machine A, and independently, we obtain a random sample 400 bolts from Machine B. Of the bolts from the Machine A sample we find that 20 are defective, whereas for the Machine B sample we find that 30 are defective. Compute the p-value.

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We wish to test the hypotheses Ho: P1-P2 = 0 versus the hypothesis H1: P1 - P2 #
O at a 5% level of significance. Here, p1 denotes, of all bolts manufactured on
Machine A, that fraction that are defective, and p2 denotes, of all bolts
manufactured on Machine B, that fraction which consists of defective bolts. In
order to test theses hypotheses, we obtain a random sample of 400 bolts
manufactured on Machine A, and independently, we obtain a random sample 40O
bolts from Machine B. Of the bolts from the Machine A sample we find that 20
are defective, whereas for the Machine B sample we find that 30 are defective.
Compute the p-value.
Transcribed Image Text:We wish to test the hypotheses Ho: P1-P2 = 0 versus the hypothesis H1: P1 - P2 # O at a 5% level of significance. Here, p1 denotes, of all bolts manufactured on Machine A, that fraction that are defective, and p2 denotes, of all bolts manufactured on Machine B, that fraction which consists of defective bolts. In order to test theses hypotheses, we obtain a random sample of 400 bolts manufactured on Machine A, and independently, we obtain a random sample 40O bolts from Machine B. Of the bolts from the Machine A sample we find that 20 are defective, whereas for the Machine B sample we find that 30 are defective. Compute the p-value.
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