4c Replace - Quick Dictate Styles - Shape Effects - A Select Design Ideas Font Paragraph Drawing Editing Voice Designer 2. The average annual income of an American citizen is normally distributed with a mean of $40,000 and a standard deviation of $13000. a. What is the probability that a randomly selected person will have an income of no more than $ 60,000? b. What is the probability that a randomly selected person will have an income of at least $65,000? c. What percentage of person will have an income of $20,000 to $65,000? d. What is the probability that a randomly selected person will have an income at most $70000? 15 Marks