Suppose that Z has a standard normal distribution. Employ Appendix A Table I to find out the value for z that solves each of the following.
(a) P(-z < Z < z) = 0.95 (Round your answer to two decimal places (e.g. 98.76))
(b) P(-z < Z < z) = 0.99 (Round your answer to two decimal places (e.g. 98.76))
(c) P(-z < Z < z) = 0.68 (Round your answer to three decimal places (e.g. 98.765))
(d) P(-z < Z < z) = 0.9973 (Round your answer to two decimal places (e.g. 98.76))