how do you do part b?

Normal probability distribution Assuming that the rates of return associated with a given asset investment are normally distributed: that the expected return, r, is 18.2%; and that the coefficient of variation, CV, is 0.92, answer the following questions: a. Find the standard deviation of returns, or b. Calculate the range of expected return outcomes associated with the following probabilities of occurrence: (1) 68%, (2) 95%, (3) 99%. BE a. The standard deviation of returns, or, is 16.744 %. (Round to three decimal places.) b. (1) The lowest possible expected return associated with the 68% probability of occurrence is %. (Rounc to two decimal places.) he