In Developing an Interval Estimate for a Population Mean, the Population

question 94

Multiple Choice

In developing an interval estimate for a population mean, the population standard deviation  was assumed to be 10. The interval estimate was 50.92 ± 2.14. Had the population standard deviation equaled 20, the interval estimate would have been:

• A)60.92 ± 2.14.
• B)50.92 ± 12.14.
• C)101.84 ± 4.28.
• D)50.92 ± 4.28.

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