A die is thrown twice. If getting a number greater than four on the die is considered a success, then the variance of the probability distribution of the number of successes is

Question

A die is thrown twice. If getting a number greater than four on the die is considered a success, then the variance of the probability distribution of the number of successes is, 2 3, 1 3, 4 9, 8 9

MARKS App · Accepted Answer

The numbers that are greater than 4 on the die is 5 , 6 . The probability of successes is, p = 2 6 = 1 3 Now, the variance of probability distribution, σ 2 = n p q = 2 × 1 3 × 2 3 = 4 9

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