Question: In Problems 9.52 and 9.53, suppose you are testing the null hypothesis H0: p = 0.20 against the two-tail alternative hypothesis H1: p 0.20 and

In Problems 9.52 and 9.53, suppose you are testing the null hypothesis H0: p = 0.20 against the two-tail alternative hypothesis H1: p 0.20 and you choose the level of significance a = 0.05. What is your statistical decision?

Problems 9.52

If, in a random sample of 400 items, 88 are defective, what is the sample proportion of defective items?

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