7-2 Homework: Chapter 8 (Sections 8.1 and .. i Saved Help Save & Exit Subm Check my work mode : This shows what is correct or incorrect for the work you have completed so far. It does not indicate completion Return to question A Use the sample information x = 38, 0= 4, n= 11 to calculate the following confidence intervals for / assuming the sample is from a normal population. 5 (a) 90 percent confidence. (Round your answers to 4 decimal places.) points x Answer is complete but not entirely correct. The 90% confidence interval is from 36.1751 x to 39.3249 X (b) 95 percent confidence. (Round your answers to 4 decimal places.) x Answer is complete but not entirely correct. The 95% confidence interval is from 35.8256 x to 40. 1744 X Mc Graw