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AleksAgata [21]
2 years ago
10

According to insurance records a car with a certain protection system will be recovered 8787​% of the time. find the probability

that exactly 55 of 1010 stolen cars will be recovered. round to the nearest thousandth.
Mathematics
1 answer:
schepotkina [342]2 years ago
3 0

Let X be the number of cars recovered from stolen cars. Let n be the total number of stolen cars and p be the probability that car will be recovered.

Given: n=10, x=5

It is given that a car with a certain protection system will be recovered 87​% of the time. It means probability of recovering a car is p=0.87

Probability that 5 out of 10 stolen cars will be recovered is

P(X=x ) = nCx  p^{x} (1-p) ^{n-x}

P(X=5) = 10C5  0.87^{5} (1-0.87) ^{10-5}

P(X=5) = 0.0047

The probability that exactly 5 out of 10 stolen cars will be recovered is 0.0047

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