For a population data set, = 12.5 a. How large a sample should be selected so
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a. How large a sample should be selected so that the margin of error of estimate for a 99% confidence interval for µ is 2.50?
b. How large a sample should be selected so that the margin of error of estimate for a 96% confidence interval for µ is 3.20?
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a E 250 125 and z 258 for 99 confiden...View the full answer
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