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almond37 [142]
3 years ago
11

The life of an electric component has an exponential distribution with a mean of 8 years. What is the probability that a randoml

y selected one such component has a life less than 5 years? Answer: (round to 4 decimal places)
Mathematics
1 answer:
faust18 [17]3 years ago
6 0

Answer:

The probability is 0.4647

Step-by-step explanation:

The variable X is the life of an electric component in years.

X follows a exponential distribution, it means that the probability that the life of an electric component is less than x years is calculated as:

P(X

Where x\geq0 and \beta is the mean life of the electric component.

So, replacing x by 5 and \beta by 8, we get that the probability that a randomly selected component has a life less than 5 years is:

P(X

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Mashcka [7]
1) Convert the mixed number 8 and 2/13 into a fraction:

8 and 2/13 = 8 + 2/13 = (8*13 + 2) / 13 = 106 / 13

2) Calculate 4/5 of 106 / 13

(4 / 5) * ( 106 / 13) = (4*106) / (5*13) = 424 / 65

That is (390 + 34) / 65 = 390/65 + 34/65 = 6 + 34/65 is painted white

3) Calculate the rest

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3 years ago
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Alex787 [66]
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Answer:

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Step-by-step explanation:

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2 years ago
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Hi there!

To solve this problem, you need to use the distributive property. You distribute the 4 inside the parenthesis as well as the 5.

Hope this helps!
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3 years ago
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