Let X be a discrete random variable with R = {1, 2, ...,9} and with PMF r+1 f (I) = 10g10 TER, where log , is the logarithmic function with base 10. (a) [1 point] Verfify that f satisfies the condition LITER f(@) = 1 of the PMF. (b) [1 point] Find the CDF F(x) = P(X