Mathematics, 11.02.2022 05:30 purplefive85
A polling company is trying to estimate the percentage of adults that consider themselves happy. A confidence interval based on a sample size of 360 has a larger than desired margin of error. The company wants to conduct another poll and obtain another confidence interval of the same level but reduce the error to one-third the size of the original sample.
Required:
How many adults should they now interview?
Answers: 1
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A polling company is trying to estimate the percentage of adults that consider themselves happy. A c...
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