Determine the point estimate of the population? proportion, the margin of error

Question

Determine the point estimate of the population? proportion, the margin of error for the following confidence? interval, and the number of individuals in the sample with the specified? characteristic, x, for the sample size provided Lower bound equal = 0.282 upper bound equals = 0.548 n = 1200

The point estimate of the population proportion is =

(Round to the nearest thousandth)

The margin of error is =

(Round to the nearest thousandth)

The number of individuals in the sample with the specified characteristic is =

(Round to the nearest integer as? needed.)

Explanation / Answer

Point estimate of the population proportion = (0.282 + 0.548)/2

= 0.415

Margin of error = 0.415-0.282

= 0.133

Number of individuals in the sample with the specified characteristic = np

= 0.415x1200

= 498

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