# Question: With reference to Exercise 3 85 find the distribution function of

With reference to Exercise 3.85, find the distribution function of the random variable X and plot its graph.

In exercise

A coin is biased so that heads is twice as likely as tails. For three independent tosses of the coin.

Use the distribution function of X to find

(a) P(1< X ≤ 3);

(b) P(X > 2).

In exercise

A coin is biased so that heads is twice as likely as tails. For three independent tosses of the coin.

Use the distribution function of X to find

(a) P(1< X ≤ 3);

(b) P(X > 2).

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