4. [-I5 Points] DETAILS ASWSBE14 6.E.011. You may need to use the appropriate appendix table or technology to answer this question. Given that z is a standard normal random variable, compute the following probabilities. (Round your answers to four decimal places.) (a) P z 5 2.0) (b) P z a 2) (c) P z 2 1.3) (d) P 2.6 S 2) (e) P1