The life of Ray microwave is uniformly distributed from six months to 9.5 years. What is the probability of Ray microwave's life less than 4 years? O 39% O 29% O 49% O 19% Question 11 10 pts A normal distribution has a mean of 61 and a standard deviation of 15. The distribution can be written as X ~ N(61,15) What is the median? O 61 O 15 O 30.5 O 38Question 12 10 pts Suppose X - NEl, 2]. What is the zscore of x = 3? O 2 O -2 O 1.5 O -1.5 Question 13 10 pts The time to smoke sh is normallyr distributed 1with an average of 5.3 hours and a standard deviation of 2.1 hours. What is the z score for a sh that take 10 hours to smoke