QCEVault

Sampling and proportions — Question 99

Original QCE Vault practice · 5 marks

Q99 · Practice questionTechnology-activeComplex unfamiliar5 marks

QUESTION 99 (5 marks)

For random samples of size 400400 from a population with unknown proportion pp, suppose P(p^<0.45)=0.10P(\hat p<0.45)=0.10 under a normal approximation. Determine pp to three decimal places.
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