A sample of the salaries of assistant professors on the business faculty at a local university revealed a mean income of $96,000 with a standard deviation of $9,200. Assume that salaries follow a bell-shaped distribution. Use the empirical rule to answer the following questions. a. Approximately what percentage of the salaries fall between $86,800 and $105,200? Percentage of returns % b. Approximately what percentage of the salaries fall between $77,600 and $114,400? Percentage of returns % c. Approximately what percentage of the salaries are greater than $114,400? Percentage of returns %