17 Jennifer is a financial consultant She tells her client that the probability of making a return on a portfolio above 15 5% The standard deviation of the return is What is the mean (expected) return on the portfolio? 9.7 b 84 7.3 6.1 0.90 18 Rob is an investment manager. He tells his client that the probability of making a positive return is 1 Return are normally distributed with mean of What is the risk measured by standard deviation, that Bob assumes in his calculations? 5.6 percent 3.71 b 437 sc 5.14 6.05 819 Anilling machine for soda bottles can be set for any mean value but it cannot be set to have every bottle contain exactly the same amount 9 of soda 0 Assume that the distribution of ounces per bottle is normal with a standard deviation of 0.24 11 At what mean level should the filling machine be so that ounces the probability that a bottle contains 12 less than 16 ounces is 0.015 3 16.52 84 16.69 15 C 16.86 36 d 17.03 317 lloston, Massachusetts, averages 211.7 sunny days per year Assume that the number of sunny days 19 follows a normal distribution with a standard deviation of 20 days 9020. What is the probability that Boston has less than 200 sunny days in a given year? 91 0.2394 92 0.2520 0.2653 0.2793 93