o estimate the percentage of incoming freshman who place into college-level mathematics, a researcher collects data from 150 incoming freshman. Match the following: all incoming college freshmen van incoming college freshman ? percentage of all incoming freshman who placed college-level in mathematics percentage of the 150 incoming college freshmen who placed college-level in mathematics ? 150 incoming college freshman ? whether or not they placed college-level in mathematics a. statistic b. sample c. parameter d. population e. individual f. variabl