3.20 Table 3.3 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 55 350 450 Stretches 295 Does not stretch 231 Total 219 286 514 800 Table 3.3 a. What is P(athlete stretches before exercising)? b. What is P(athlete stretches before exercising|no injury in the last year)?

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3.20 Table 3.3 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
55
Stretches
295
350
Does not stretch 231
Total
219
450
286
514
800
Table 3.3
a. What is P(athlete stretches before exercising)?
b. What is P(athlete stretches before exercising|no injury in the last year)?
Transcribed Image Text:Try It 3.20 Table 3.3 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 55 Stretches 295 350 Does not stretch 231 Total 219 450 286 514 800 Table 3.3 a. What is P(athlete stretches before exercising)? b. What is P(athlete stretches before exercising|no injury in the last year)?
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