Use the sample information z = 42,0 = 7, n= 16 to calculate the following confidence intervals for assuming the sample is from normal population
(a) 90 percent confidence. (Round your answers to 4 decimal places.)
The 90% confidence interval is from
Eto
(b) 95 percent confidence. (Round your answers to 4 decimal places.)
The 95% confidence interval is from
to
(c) 99 percent confidence. (Round your answers to 4 decimal places.)
The 99% confidence interval is from
to
Adeccribe how the intensals change as you increase the confidence level