Question
Use the sample informationx x= 36, = 5, n = 12 to calculate the following confidence intervals for assuming the sample is from a normal
Use the sample informationx
x= 36,= 5,n= 12 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 ___
(d)Describe how the intervals change as you increase the confidence level.
- 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.
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