As part of a statistics project, a teacher brings a bag of marbles containing 600 white marbles and 400 red marbles. She tells the students the bag contains 1000 total marbles, and asks her students to determine how many red marbles are in the bag without counting them.

Question

A student randomly draws 150 marbles from the bag. Of the 150 marbles, 63 are red.

1.Based on the sample, the student would estimate that _________ marbles in the bag were red.

Answer 1

63/150 * 1000 = ____