Doctoral Student Salaries Full-time Ph. D. students receive an average of $ 12,837 per year. If the average salaries are normally distributed with a standard deviation of $1500, find these probabilities. Round the final answers to at least four decimal places and intermediate z-value calculations to two decimal places. Part: 0 / 2 Part 1 of 2 (a) The student makes more than $13,600. P(X> 13,600) = X Part: 1 / 2 Part 2 of 2 (b) The student makes between $15,000 and $ 16,000. P (15,000