In Developing an Interval Estimate for a Population Mean,the Population $\text { ? }$

question 30

Multiple Choice

In developing an interval estimate for a population mean,the population standard deviation $\text { ? }$
was assumed to be 10.The interval estimate was 50.92 $\pm$ 2.14.Had $\text { ? }$
equaled 20,the interval estimate would be:

• A) 60.92 \(\pm\) 2.14.
• B) 50.92 \(\pm\) 12.14.
• C) 101.84 \(\pm\) 4.28.
• D) 50.92 \(\pm\) 4.28.

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