A normal population has a mean of 18.3 and a standard deviation of 5. Refer to the table in gppendix 3.1. a. Compute the zvalue associated with 25.0. [Round the nal answer to 2 decimal places.) b. What proportion of the population is between 18.3 and 25.0? {Round z-score computation to 2 decimal places and the nal answer to 4 decimal places} Proportion |:| c. What proportion of the population is less than 18.0? [Round zscore computation to 2 decimal places and the final answer to 4 decimal places-} Proportion |:|