Practice Exam Questions
2026 MATH 215 Introduction to Statistics - Practice Mid-Term Exam Breakdown How to Solve It Questions and Solutions Athabasca University
1. 11 toys are placed in a container. The toys are identical except for colour 7 are red, and 4 are green. A child is asked to choose two toys at random. Answer the following questions, round your answers to at least two decimals. a. What is the probability that the child chooses the two red toys?
0.38
b. What is the probability that the child chooses one red and one green toy? c. What is the probability that the child chooses at least one green toy.
0.51 0.62
d. What is the probability that the child first chooses red toy and then chooses green toy? To answer these questions, use the tree diagram to calculate the fractions. These questions are based without replacement of the items in each stage.
0.25