(8 T2} (Note: As you begin the calculation problems for chapter 7, you should be using the following calculator functions as much as possible: nonnalcdfijzl , 22) nonnalcdftzl , 22 , 5, cr) invnonno} invnonno, 5;, a) If you do not know the difference between the commands, you are not ready to attempt this homework assignment.) Suppose the random variable Z follows a standard normal distribution. Calculate each of the following. Round your responses to at least 4 decimal places. a} P{0.'2 <: z . b :>