I am having issues with question 11 and question 12 I am just missing one piece of information. or question 11 I would appreciate a step by step showing of how to do it

at All 77% 2:37 PM 11. + 0/3 points Previous Answers My Notes + Ask Your Teacher What are the big corporations doing with their wealth? One way to answer this question is to examine profits as percentage of assets. A random sample of 50 Fortune 500 companies gave the following information. Estimate the sample mean, sample variance, and sample standard deviation for profit as percentage of assets. (Round your answers to three decimal places.) Profit as percentage of assets 8.6-12.5 15 12.6-16.5 16.6-20.5 20.6-24.5 24.6-28.5 Number of companies x 14.803 2 23.39 8 4.84 Need Help? Read It Watch it Master It Viewing Saved Work Revert to Last Response 12. + 2/3 points Previous Answers My Notes + Ask Your Teacher Alexander Borbely is a professor at the University of Zurich Medical School, where he is director of the sleep laboratory. The histogram in the figure below is based on information from his book Secrets of Sleep. The histogram displays hours of sleep per day for a random sample of 200 subjects. Estimate the mean hours of sleep, standard deviation of hours of sleep and coefficient of variation. (Enter x to 1 decimal place, s and CV to 2 decimal places.) Frequency 8 80 TOL 60 50 40 30 22 20 14 10 3.5 45 5.5 95 105 Hours of sleep x 7.9 $ 1.05 CV 13.28 Need Help? Read It