an educator wants to construct a 95% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading.

part 1 of 3-

The result of recent State White 10 suggested that the proportion is 0.8 using this estimate what sample size is needed so that the confidence interval will have a margin of error of 0.07?

part 2 of 3-

estimate the sample size If no estimate of P is available. A sample of _____ Elementary school children Is needed to obtain a 95% confidence interval with a margin of error of 0.07.

part 3 of 3-

If the educator wanted to Estimate the proportion In the entire United States rather than in colorado, Would The necessary Size be smaller larger or about the same? Explain. The sample size would be ___

, since it ___ Depends on the size of the population.