E Homework: Section 6.1 Homework Question 13, 6.1.47 HW Score: 88.24%, 15 of 17 points x Points: 0 of 1 Save Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and o = 19.8. Assume the population is normally distributed. A 90% confidence level requires a sample size of. (Round up to the nearest whole number as needed.) Help Me Solve This View an Example Get More Help Media Clear All Check