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You are asked how many complexes have at least 200 residents on the first day of a quarter. (a)…

You are asked how many complexes have at least 200 residents on the first day of a quarter. (a)…

You are asked how many complexes have at least 200 residents on the first day of a quarter. (a) Because our sample has only ten observations, we cannot use our normal distribution for the estimator. Why not? (b) What minimum sample size would be required? [Hint: Use the present observations.] (c) What sample size would be required to estimate the percentage of complexes with at least 200 residents to within ten percentage points with no more than a one percent risk of error? (d) If you use the sample size of part (c), what's the smallest value of p for which the normal approximation would be valid?