Homework 07: Problem 9 Previous Problem Problem List Next Problem (1 point) Scores on a standardized exam are normally distributed with a mean of 505 and a standard deviation of 83 . The figure below shows the probability distribution of the scores on a standardized exam. Calculate the shaded area under the curve. Answer: 42? . 81 617 . 85 The Scores on a Standardized Exan Homework 07: Problem 10 Previous Problem Problem List Next Problem (1 point) Suppose that X is normally distributed with mean 86. If the value of 98.705 is exceeded only by the top 11.31 %, what is the standard deviation of the distribution? 0