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Sampling and proportions — Question 94

Original QCE Vault practice · 5 marks

Q94 · Practice questionTechnology-activeComplex unfamiliar5 marks

QUESTION 94 (5 marks)

A population proportion is p=0.12p=0.12. For random samples of size 250250, use a normal approximation to determine (a) P(0.08<p^<0.15)P(0.08<\hat p<0.15) and (b) the value cc such that P(p^<c)=0.95P(\hat p<c)=0.95.
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