ourse Messages | Forums Calendar Gradebook Home > STT 2640 Online FALL 2021 > Assessment Task 2: Homework 4A Progress Score: 5/20 5/20 answered Question 6 8.1 Margin of Error for Mean u with o Known (Z-table) You measure 23 backpacks' weights, and find they have a mean weight of 38 ounces. Assume the weights are normally distributed and the population standard deviation is 10.9 ounces. Based on this, what is the maximal margin of error associated with a 99% confidence interval for the true population mean backpack weight. Give your answer as a decimal, to two places E = + ounces Question Help: Read 1 B Read 2 Message instructor Submit Question O 9 95