The lifetime of a particular bulb is a random variable with an average of μ =...

The lifetime of a particular bulb is a random variable with an average of μ = 2000 hours and a standard deviation of σ = 200 hours.

(a) What is the probability that a bulb has a lifetime between 2000 and 2400 hours?

(b) What is the probability that a bulb will last less than 1470 hours?

(c) In the case that a bulb lasts for more than 2100 hours, the probability that it will last more than 2300 hours You calculate.

(d) the probability of a bulb lasting less than 2150 hours when it lasts for more than 2050 hours. You calculate.

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orchestra answered 1 year ago

The lifetime of a particular bulb is a random variable with an average of μ =...

The lifetime of a particular bulb is a random variable with an average of μ = 2000 hours and a standard deviation of σ = 200 hours. (c) Calculate the probability that a bulb will last more than 2300 hours if it lasts longer than 2100 hours. (d) Calculate the probability that a bulb will last less than 2150 hours if it has lasted more than 2050 hours.

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The lifetime of a particular bulb is a random variable with an average of μ =...

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