You may need to use the appropriate appendix table to answer this question. Given that z is a standard normal random variable, find z for each situation. (Round your answers to two decimal places.) (a) The area to the left of z is 0.9750. 1.96 (b) The area between 0 and z is 0.4750. 1.96 (c) The area to the left of z is 0.7454. (d) The area to the right of z is 0.1271. (e) The area to the left of z is 0.7794. (f) The area to the right of z is 0.2206