Suppose X has a standard normal distribution. The pnoI'mO. dnorm(), and qnormo functions should be useful in the following. Remember, if x has a standard normal distribution then 500 = o and Var(X):1. a) What is the expected value of 123X-7 7 b) What IS the variance of %Xr7? 13 c) Using R, nd the expected value of ? ? d) Using R, calculate the probability x > 1,334) e) Using R, calculate the probability that -1.01 t = .85 then what is t? h) Copy your R script for the above into the text box here