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99% Confidence Interval

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In a study of 90 statistics students, 14 were found to utilize a particular study strategy. Use the formula for the margin of error to answer the following:

Find the 99% confidence interval estimate of the proportion of all statistic students utilizing this strategy.

________ < p < ________

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Solution Summary

This solution contains step-by-step calculations to determine the 99% confidence interval.

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The best solution to use is:

p ± z * sqrt[ p(1-p)/n ]

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To find the 99% confidence interval using the information we have:

p = 14/90 = 0.15556
1 - p = 0.84444
n = 90
z = ...

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