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

question 2

Multiple Choice

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

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

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