Question

Question 8

If the standard deviation of a binomial distribution is 6 and probability of success p = 0.6, then the no. of trials (n) is equal to

		10
		150
		25
		50

Answer 1

If the standard deviation of a binomial distribution is 6.

The probability of success is p=0.6.

Now, if the number of trials is n, then the binomial distribution has parameters n and p=0.6.

Now, according to the property of binomial distribution, the standard deviation has formula

Now, it is given that

The correct answer is option (B) 150.