Question 4

a https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%252Fnew.. To 8-3 Homework Chapter 8 (Sections 8.4 through 8.6) Saved Help Save & Exit Submit Check my work 4 Use the sample information I =38, 0 = 4, n=11 to calculate the following confidence intervals for // assuming the sample is from a normal population 5 points (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from to eBook Ask (b) 95 percent confidence. (Round your answers to 4 decimal places.) Print The 95% confidence interval is from to References (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. O The interval gets narrower as the confidence level increases. O The interval gets wider as the confidence level decreases O The interval gets wider as the confidence level increases. O The interval stays the same as the confidence level increases