An urn contains 5 red and 2 black balls

Asked by admin @ 20/08/2021 in Math viewed by 261 People

an urn contain 5 red and 2 black balls , two balls are randomly drawn without replacement . let x represent number of black ball draw .what are the possible value of x ? In x a random variable ? If yes, find the mean and variance of x?

Answered by admin @ 20/08/2021

In the attachment I have answered
this problem.

Steps are very easy to understand.

I hope this answer help you

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