Use the sample informationx

x= 40,= 3,n= 13 to calculate the following confidence intervals forassuming the sample is from a normal population.

(a)90 percent confidence.(Round your answers to 4 decimal places.)

The 90% confidence interval is from ____to____

(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____