Question: Use the sample informationx x= 43, = 3, n = 11 to calculate the following confidence intervals for assuming the sample is from a normal

Use the sample informationx

x= 43,= 3,n= 11 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 fromto

(b)95 percent confidence.(Round your answers to 4 decimal places.)

The 95% confidence interval is fromto

(c)99 percent confidence.(Round your answers to 4 decimal places.)

The 99% confidence interval is fromto

(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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