AP EAMCET · Maths · Statistics
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
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
The numbers that are greater than 4 on the die is 5, 6. The probability of successes is, p=26=13 Now, the variance of probability distribution, σ2=npq =2×13×23 =49
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