1. Construct a 95% confidence interval to estimate the population mean when x(bar) = 54 and...

1. Construct a 95% confidence interval to estimate the population mean when x(bar) = 54 and s= 13.1 for the sample size below.

(a) n= 20, ( b) n= 40, (c) n= 57 The 95% confidence interval for the population mean when n equals= 20

is from a lower limit of __ to an upper limit of _____ (Round to two decimal places as needed.)

2. Construct a 95% confidence interval to estimate the population mean using the data below.

x (bar) = 16 , s = 5.1, n = 15

What assumptions need to be made about this population?

The 95% confidence interval for the population mean is from a lower limit of _____

to an upper limit of ___

(Round to two decimal places as needed.)

Solutions

Expert Solution

orchestra answered 1 year ago

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