Use the sample informationx

x= 40,= 4,n= 20 to calculate the following confidence intervals forassuming the sample is from a normal population.

4 Use the sample Information = = 40, = 4, n = 20 to calculate the following confidence Intervals for u assuming the sample Is from a normal population. 5 (a) 90 percent confidence. (Round your answers to 4 decimal places.) points The 90% confidence Interval Is from (b) 95 percent confidence. (Round your answers to 4 decimal places.) eBook 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 Print (d) Describe how the Intervals change as you Increase the confidence level. References The Interval gets narrower as the confidence level Increases. The Interval gets wider as the confidence level decreases. The Interval gets wider as the confidence level Increases. The Interval stays the same as the confidence level Increases