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Chapter 8: Q 8.45 (page 331)

Explain the effect on the margin of error and hence the effect on the accuracy of estimating a population mean by a sample mean.

Increasing the sample size while keeping the same confidence level.

Short Answer

Expert verified

Accuracy to estimate the population mean is decreased.

Step by step solution

01

Given Information

It is given that sample size is increased and confidence level is same.

02

Explanation

As sample size is increased and confidence level is same, it results in decreasing margin of error. Therefore the accuracy for estimation of population mean by sample mean is increased.

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Most popular questions from this chapter

The margin of error is also called the maximum error of the estimate. Explain why.

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A confidence interval for a population mean has a margin of error of 3.4

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Interpret the preceding formulas for lower and upper confidence bounds in words.
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