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3.4 Exercise 2

Avg difficulty 2.5

the table shows the number of athletes who stretch before exercising and how many had injuries within the past year.

	Injury in last year	No injury in last year	Total
Stretches	55	295	350
Does not stretch	231	219	450
Total	286	514	800

What is P(athlete stretches before exercising)?
What is P(athlete stretches before exercising $\left|\right.$ no injury in the last year)?

OpenStax Introductory Business Statistics 2e, 3.4 Contingency Tables and Probability Trees, exercise 2

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Adapted from Introductory Business Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Business Statistics 2e. Imported at revision 50ec917.