4. Calculate P(X is odd) in each setting below. Show your calculation or explain your answer for each part. (a) X ~ Geometric(0.7). Your final answer should be a number. (b) X ~ Binomial(101, 0.5). Your final answer should be a number. (c) First let Y ~ N(0, 1) (a standard normal random variable), and then let X be the answer you get when you round Y to the nearest integer. Your answer does not need to be simplified to a number-you can write it with summations/fractions/integrals etc as needed. However, your final answer cannot have any probability type notation in it, e.g. it cannot include terms like px (3) or fy (1) or P(X