Practicing Success
CUET Preparation Today
CUET
-- Mathematics - Section B2
Probability Distributions
The mean and variance of a binomial distributors are 4 and 2 respectively. Then the probability of atmost 2 successes is :
$\frac{9}{256}$
$\frac{247}{256}$
$\frac{219}{256}$
$\frac{37}{256}$