Hello, can I get help with these question soon please? I am stuck, no explanation is required. Thank you!!!!!

On a popular app, users rate hair salons 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 stars of the selected rating. Here is the probability distribution of X. Value x of X 2 3 4 5 P(X=x) 0.25 0.19 0.09 0.21 0.26 For parts (a) and (b) below, find the probability that the randomly selected hair salon rating has the described number of stars. (a) 4 or more: 0 X (b) Fewer than 3:Let X be a random variable with the following probability distribution. Value x of X P (X=x) 4 0.05 5 0.30 6 0.10 7 0.50 8 0.05 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X ) of X. E (x) = 0 X 5 (b) Find the variance Var(X ) of X. Var (x) = 0