+3 votes
in Class 12 by kratos

Let X denote the number of hours you study during a randomly selected school day. The probability that X can take the values of x, has the following form, where k is some constant.

P(X = x) = 0, 1, if x = 0

P(X = x) = Kx, if x = 1 or 2

P(X = x) = K(5 - x), if x = 3 or 4

P(X = x) = 0, otherwise

find the value of k.

1 Answer

+4 votes
by kratos
 
Best answer

ΣP(x) = 1

1 = kx + 5k = kx

k = 1/5

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