Determine the point estime of the popultation mean and margi

Determine the point estime of the popultation mean and margin of error for the following confidence interval, and the number of individals in the sample with specified characteristc, x, for sample size provided

Lower bound is 0.374, Upper Bound=0.766, n=1500

1. The point estimate of the population proportion is

2. The margin of error is

3. The number of individuals in the sample with the specified characteristic is

Solution

The point estimate of the population proportion is

(0.374+0.766)/2 = 0.57

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p - margin of error = 0.374

--> 0.57 - margin of error = 0.374

So margin of error= 0.57- 0.374 =0.196

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

1500*0.57 = 855