Assignment S Save Submit Assignment ns Exercise 08.01 Algo (Population Mean: Sigma Known) Questi Hint(s) Check I A simple random sample of 10 items resulted in a sample mean of 20. The population standard deviation is o - 5. Round your answers to two decimal places. a. What is the standard error of the mean, of ? 1.58 b. At 95% confidence, what is the margin of error? Hint(s) Check My