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If in a binomial distribution n = 4 and find q.
n = 4
P(x=r)= nCr pr qn-r
In a binomial distribution, if n = 20, q = 0.75, then write its mean.
If in a binomial distribution mean is 5 and variance is 4, write the number of trials.
In a group of 200 items, if the probability of getting a defective item is 0.2, write the mean of the distribution.
If the mean of a binomial distribution is 20 and its standard deviation is 4, find p.
The mean of a binomial distribution is 10 and its standard deviation is 2, write the value of q.
If the mean and variance of a random variable X having a binomial distribution are 4 and 2 respectively, find P (X = 1).
If the mean and variance of a binomial variate X are 2 and 1 respectively, find P(X > 1).
If the mean and variance of a binomial distribution are 4 and 3 respectively, find the probability of no-success.
If for a binomial distribution P (X = 1) = P (X = 2) = α, write P (X= 4) in terms of α.
An unbiased coin is tossed 4 times. Find the mean and variance of the number of heads obtained.
If X follows binomial distribution with parameters n = 5, p and P(X = 2) = 9 P(X = 3), then find the value of p.