Mathematics, 03.04.2020 16:32 rbalexander25

Suppose the lifetime (in months) of a certain type of lightbulb is a random variable X with pdf f (x) = 23 , x > 1. x2 x a. Find the cdf F(x). b. Find the probability that a lightbulb of this kind lasts longer than 2 months. c. Find the mean and variance of X. d. In a random sample of 5 such lightbulbs, what is the probability that at least 2 of them will work for more than 2 months?

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 18:10, mayamcmillan11

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Answers: 3

continue

Mathematics, 21.06.2019 20:00, Oregonduckerz

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Answers: 2

continue

Mathematics, 21.06.2019 22:30, patrickfryer240

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i

Answers: 1

continue

Mathematics, 21.06.2019 23:30, maciemessing2

Drag each number to the correct location on the statements. not all numbers will be used. consider the sequence below. -34, -21, -8, 5, complete the recursively defined function to describe this sequence

Answers: 1

continue

You know the right answer?

Suppose the lifetime (in months) of a certain type of lightbulb is a random variable X with pdf f (x...