Sally’s bag of marbles contains 10 red, 12 blue, and 3 green marbles. She conducted an experiment in which she pulled out one marble and recorded the color then returned it to the bag 50 times. Her results are shown in the table. What is the difference between the experimental probability and the theoretical probability of picking a red marble?

How many ordered pairs of positive integers satisfy xy=32?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

Explain how to graph a scatterplot and its regression line using a regression calculator.