(Solved): 13. Why is the following table not a legitimate probability distribution? 14. Use the given frequen ...

13. Why is the following table not a legitimate probability distribution? 14. Use the given frequency distribution to construct a discrete probability distribution for the random variable $y=$ number of imperfections found. 15. Use the given probability distribution to find the expected value of the random variable $z=$ number of days of rain in the next four days.