A Sample of 25 Observations Is Taken to Estimate a Population

question 40

Multiple Choice

A sample of 25 observations is taken to estimate a population proportion π.The sampling distribution of sample proportion p is

• A)not normal since n < 30.
• B)approximately normal because p is always normally distributed.
• C)approximately normal if nπ ≥ 5 and n(1-π)≥ 5.
• D)approximately normal if π approaches 0.50.

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