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Mathematics 30 Online
OpenStudy (anonymous):

Let X be a random variable with the probability function f(x) = kx^2 for x = 2, 3, 4, 6. (a) Find the appropriate value of k. (b) Find the mean  and the variance.

OpenStudy (anonymous):

discrete or continuous?

OpenStudy (anonymous):

the random variable that is.

OpenStudy (anonymous):

continuous

OpenStudy (anonymous):

oh no wait this is discrete. Sorry.

OpenStudy (anonymous):

yeah, i dont know why i asked. it gave discrete values (2, 3, 4, 6). my apologies.

OpenStudy (anonymous):

hold on...

OpenStudy (anonymous):

Part 1

OpenStudy (anonymous):

Part 2

OpenStudy (anonymous):

Alright I see what I did wrong there. I did part a right, but part b sort of messed me up. I know what to do now. Thanks for the help. :)

OpenStudy (anonymous):

Not a problem. Is this for class or a professional exam?

OpenStudy (anonymous):

It's suppose to be a class that relates with both mathematics and computer science.

OpenStudy (anonymous):

Cool. Sounds like something from an actuary P/1 exam. Anyway, best of luck and take care.

OpenStudy (anonymous):

Thanks and you too.

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