Full-time PhD. Students receive an average of $12,837 per year. If the average salaries are normally distributed with a standard deviation of $1500, Round the answer to 2 decimal places. Do not forget to include Ti84 Calculator syntax. a) Find the probability when the student makes less than $11,000 b) Find the probability when the student makes more than $15,000 b) Find the probability when the student makes between $13,000 and $14,000 c) Find the income of the top 5% d) Find the 48th percentile of the income. e) Between what two values are the middle 60% of the income