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Mathematics

1 answer:

alexandr402 [8]3 years ago

8 0

I believe that the answer is A

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3 years ago

Find the perimeter of the square. Be sure to write the correct unit in your answer.

docker41 [41]

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3 years ago

Read 2 more answers

According to a survey, 62% of murders committed last year were cleared by arrest or exceptional means. Fifty murde committed las

alexira [117]

Answer:

a) The probability that exactly 41 of the murders were cleared is 0.0013

b) The probability that between 36 and 38 of the murders, inclusive, were cleared is 0.0809.

c) Yes, it would be unusual

Step-by-step explanation:

Let p=62% considered as the probability of having a commited that is cleared by arres or exceptional means. We assume that choosing each of the 50 commited is independent of each choose. Then, let X be the number of cleared. In this case, X is distributed as a binomial random variable. Recall that, in this case,

$P(X=k) = \binom{50}{k} p^{k}(1-p)^{50-k}$ for $0\leq k \leq 50$ , with p=0.62