Question 18 (1 point) A physician observes the number of lesions on subjects who regularly used tanning salons. Let X be the number of lesions observed. The physician found that X had the following probability distribution. Value MK 0 1 2 3 4 Probability 0.05 0.1 0.25 0.30 0.30 What is the value of P(X > 3)? Please use this information to answer questions 19 through 21: Let X be a uniform random number between 0 and 1 produced by a random number generator (discussed in lecture). The random number generator will spread its output uniformly (evenly) across the entire interval from O to 1. All numbers have an equal probability of being selected. Question 19 [1 point) Find "a" such that P(X>a)=0.2. Question 20 (1 point) What is P(0.1