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OpenStudy (anonymous):
What is the mean of this discrete random variable. That is, what is E(X), the expected value of X?
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OpenStudy (anonymous):
OpenStudy (anonymous):
you multiply the X by the probabilties and then add. so the expected value should be 19.59
OpenStudy (anonymous):
12(0.07)+15(0.21)+17(0.17)....etc etc
OpenStudy (anonymous):
thank youuuu=)))
OpenStudy (anonymous):
anytime! glad i could help
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