Question: Problem 7.49 How large a sample size is needed if we want to be 90% confident that the sample proportion will be within 0.02 of

Problem 7.49 How large a sample size is needed if we want to be 90% confident that the sample proportion will be within 0.02 of the true proportion of defective items and:

(a) the true proportion p is unknown;

(b) it is known that the true proportion p ≤ 0.1.

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