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Use the sample information x= 43,= 6,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 _______.