1. use excel to answer the following. in each question, find the blank to make the statement true. note that z represents we are using the standard normal distribution. note: round your answers to two decimal places. a) p(z < -0.69) = b) p(z > 1.84) = c) p(z > )= 0.921 d) p(z < ) = 0.61 2. use excel to answer the following. in each question, find the blank to make the statement true. in this example assume we have a variable x that is distributed normally with mean 30 and standard deviation 6. note: round your answers to two decimal places. a) p(x < 28.40) = b) p(x > 39.30) = c) p(x > )= 0.043 d) p(x < ) = 0.086