A normal population has a mean of 19 and a standard deviation of 5.
(a) Calculate the z value associated with 25 (Round your answer to 2 decimal places.)
(b) What proportion of population is between 19 and 25? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)
(c) What proportion of the population is less than 17? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)