Question

Construct a 95​% confidence interval to estimate the population mean when x=122 and s =28 for...

Construct a 95​% confidence interval to estimate the population mean when x=122 and s =28 for the sample sizes below.

​a) n=30       ​b) n=70       ​c) n=90

a) The 95​% confidence interval for the population mean when n=30 is from a lower limit of to an upper limit of. ​(Round to two decimal places as​ needed.)

​b) The 95​% confidence interval for the population mean when n=70 is from a lower limit of to an upper limit of . ​(Round to two decimal places as​ needed.)

​c) The 95​% confidence interval for the population mean when n=90 is from a lower limit of nothing to an upper limit of nothing . ​(Round to two decimal places as​ needed.)

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