You Wish to Construct a 90% Confidence Interval to Compare

question 12

Multiple Choice

You wish to construct a 90% confidence interval to compare the mean measurement for two groups.A small pilot study yields sample standard deviations of 10 and 12 for Group 1 and Group 2,respectively.If we wish to obtain a margin of error of at most 2,what sample size should we take from each group? Assume equal sample sizes.

• A)165
• B)168
• C)169
• D)166
• E)167

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Definitions:

Singer

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Socially Acceptable

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