Formula 8.2 provides a method for computing the sample size required to obtain a confidence interval with
Question:
Formula 8.2 provides a method for computing the sample size required to obtain a confidence interval with a specified confidence level and margin of error. The number resulting from the formula should be rounded up to the nearest whole number.
a. Why do we want a whole number?
b. Why do we round up instead of down?
Formula 8.2
The sample size required for a (1 − α)-level confidence interval for μ with a specified margin of error, E, is given by the formula
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a We want a whole number because the number of observations to be take...View the full answer
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