Given a standardized normal distribution (with a mean of O and a standard deviation of 1), complete parts (a) through (b. @ Click here to view page 1 of the cumulative standardized normal distribution table. @ Click here to view page 2 of the cumulative standardized normal distribution table. a. What is the probability that Z is less than 1.57? The probability that Z is less than 1.57 is El. (Round to four decimal places as needed.) b. What is the probability that Z is greater than 1.83? The probability that Z is greater than 1.83 is (Round to four decimal places as needed.)