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Ivahew [28]
3 years ago
11

Jones figures that the total number of thousands of miles that an auto can be driven before it would need to be junked is an exp

onential random variable with parameter .fn. Smith has a used car that he claims has been driven only 10,000 miles. If Jones purchases the car, what is the probability that she would get at least 20,000 additional?
Mathematics
1 answer:
romanna [79]3 years ago
6 0

Answer:

0.3678

Step-by-step explanation:

Jones figures that the total number of thousands of miles that an auto can be driven before it would need to be junked is an exponential random variable with parameter 1/20. Smith has a used car that he claims has been driven only 10,000 miles. If Jones purchases the car, what is the probability that she would get at least 20,000 additional miles out of it?

Given that the total number of thousands of miles(X) that an auto can be driven

before it would need to be junked is an exponential random variable with parameter 1/20.

=> X ≅ Exponential(λ= 1/20)

=> f(x) = 1/20 * e^(-x/20) , 0 < x < ∞

=> F(X) = P{X < x} = 1 - e^(-x/20)

The probability that she would get at least 20,000 additional miles out of it.

P{X > 20} = 1-P{X < 20}

P{X > 20} = 1-(1 - e^(-20/20))

= e^(-1)

= 0.3678

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GaryK [48]

Step-by-step explanation:

The sequence is as follows :

-59 ,-67 ,-65 ,-53 ,-31 ,...

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Common difference = second term - first term

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To calculate the second term add (-8).

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7 0
3 years ago
the scale on a map is stated as 1:250000 two villages are 9 cm apart on the map how far from each other are the two villages in
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Answer:

22.5 kilometers

Step-by-step explanation:

we know that

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7 0
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5 0
3 years ago
Did I get this right?
wel

Yes hope it helps!!!!!!!!

4 0
3 years ago
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Answer:

1) not polynomial

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