The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift. If X has an

Question

The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift. If X has an average value of 21 minutes, what is the probability that X is less than 28 minutes? (Do not round until the final step. Round your answer to 3 decimal places.)

in progress 0
Anna 4 weeks 2021-09-19T02:29:30+00:00 1 Answer 0

Answers ( )

    0
    2021-09-19T02:30:30+00:00

    Sorry I don’t know I’m bad at math lol

Leave an answer

45:7+7-4:2-5:5*4+35:2 =? ( )