A Sample of 25 Observations Is Taken to Estimate a Population

question 4

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 Is always normally distributed.
• C)approximately normal if np ≥ 5 and n(1 - p)≥ 5.
• D)approximately normal if p approaches 0.50.

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Definitions:

Carbon Monoxide

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Storm-Water Systems

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A state of well-being in which the body is free from illness, injury, and pain, often as a result of exercise and good nutrition.

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The presence or introduction into the environment of substances or things that have harmful or poisonous effects.