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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