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May 24, 2015

Homework Help: Math

Posted by Anonymous on Wednesday, January 26, 2011 at 9:14am.

I need to find k for the probability distribution:
P(x)=k(x+2) for x=1,2,3

I tried subbing in the x-values, which gave me:
P(1)=3k
P(2)=4k
P(3)=5k

But I still have no idea what I need to do to find k.

Guidance, please?

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