2D, 2E A sports commentator claims that 45% of all football injuries are knee in

Question

2D, 2E A sports commentator claims that 45% of all football injuries are knee injuries. If this claim is true, what is the probability that in a game with 5 reported injuries a) Jat leas1 is a knee injuy? b), exactly 3 are knee injuries? 2 c). more than 2 are knee injuries? d). none are knee injuries? 2) In Toronto, Canada the test. 55%orp ople pass the drivers' road test Suppose that 100 people take a) What is the number of people who are e to pass? loo x.55 55 b) What is the standard deviation for the number expected to pass? e) What is the probability that exactly 85 people passed? PDF ( 1.357 d) What is the probability that 38 or more passed? e) What is the probability that less than 50 passed? f) What is the probability that at least 49 passed? Pa.ss 10,695 0.90

Explanation / Answer

1c. Your answer is correct.

2d. P(x>=38) = 1-P(x<38)

=1-P(x<=37)

= 1-0.0002

=0.9998

e) P(x<50) =0.135

Any doubt , please ask.

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