The Montana State Education Commission wants to estimate the percentage of tenth

Question

The Montana State Education Commission wants to estimate the percentage of tenth-grade students who read at or below the eighth-grade level. How large a sample should be selected in order to estimate this proportion with a 99% confidence level and a margin of error of at most 3.45%? (Assume no preliminary estimate, or p-hat, is available.) The Montana State Education Commission wants to estimate the percentage of tenth-grade students who read at or below the eighth-grade level. How large a sample should be selected in order to estimate this proportion with a 99% confidence level and a margin of error of at most 3.45%? (Assume no preliminary estimate, or p-hat, is available.)

Explanation / Answer

th sample size does not change for population size greater than 20000

so for sample size to estimate proportion with 99% confidence level amd margin of error at most 3.45% is

1303

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