n a popular app, users rate restaurants as 1, 2, 3, 4, or 5 stars. Suppose a rating is randomly selected from all the ratings on the app. Let X be the number of ars of the selected rating. Here is the probability distribution of X. Walue x of X 1 P(X=x) 2 3 4 5 0.22 0.19 0.11 0.25 0.23 r parts (a) and (b) below, find the probability that the randomly selected restaurant rating has the described number of stars. (a) More than 3:0 (b) At most 2: X

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