Assume that population mean is to be estimated from the sample described. Use the sample results to approximate the margin of error and 95% confidence interval.

Sample size,

n=100;

sample mean,

x=85.0

cm; sample standard deviation,

s=4.0

cm

The margin of error is

enter your response here

cm.(Round to one decimal place as needed.)

Find the 95% confidence interval.

enter your response here

cm<

cm(Round to one decimal place as needed.)