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antiseptic1488 [7]
3 years ago
7

The distance between major cracks in a highway follows an exponential distribution with a mean of 5 miles. (a) What is the proba

bility that there are no major cracks in a 10-mile stretch of the highway
Mathematics
1 answer:
Nonamiya [84]3 years ago
7 0

Answer:

P(Y=0) = 0.1353

Step-by-step explanation:

From the question we are told that:

Exponential distribution mean \=x = 5 miles

Distance d=10miles

Generally the equation for Exponential distribution is mathematically given by

 \lambda=\frac{1}{E(X)}

 \lambda=\frac{1}{5}

Therefore

Possion Y

 10\lambda=10*(1/5)

 10\lambda=2

Generally the equation for  The probability that there are no major cracks in a 10 mile stretch of the highway is mathematically given by

 P(Y=0) = \frac{e-2 (2)0}{0!}

 P(Y=0) = e-2

 P(Y=0) = 0.1353

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