Return to question 4 Use the sample information x = 38, o= 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 33.0241 X to 38.9759 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 32.4542 X to 39.5458 X Mc Graw Hill