Q22 of 29 Page 1

The random variable X has a probability distribution P(X) of the following form, where k is some number:

(i) Find the value of k

(ii) Find P(X <2)

(iii) Find P(X ≤ 2)

(iv) FindP(X ≥ 2)

(i) we know that sum of probability distribution is 1

⇒ k + 2k + 3k + 0 = 1

⇒ 6k = 1

(ii)

(iii)

(iv)

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