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Use the sample informationx x= 40, = 7, n = 13 to calculate the following confidence intervals for assuming the sample is from a normal

Use the sample informationx

x= 40,= 7,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__

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