Expert Math Class 12 Level 9

In a binomial distribution with n=9, p=1/7, what is the variance?

Binomial distribution में n=9, p=1/7 है। Variance क्या है?

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Correct Answer

C. 54 / 49

Explanation

Step 1: Identify the concept: binomial variance. Step 2: Variance=npq. q=6/7, so the variance is 54/49. Step 3: Exam tip: Binomial mean np and variance npq are different.

Step 1: अवधारणा binomial variance है। Step 2: Variance=npq होता है। q=6/7, इसलिए variance 54/49। Step 3: याद रखें: Binomial mean np और variance npq अलग होते हैं।

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