The variance of the number of heads in two tosses of a coin is : Option 1: 1/2 Option 2: 1 Option 3: 1/4 Option 4: 1/8

The answer is '1/2'. View full solution:

CUET Mathematics - The variance of the number of heads in two tosses of a coin is : | PYQs + Solutions

CUET Mathematics 2023 11 Aug Shift 1

Applied Mathematics

Easy

$\frac{1}{2}$

$\frac{1}{4}$

$\frac{1}{8}$

✅ Correct Option: 1

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If a random variable X follows binomial distribution with mean 5 and variance $\frac{5}{2}$ , then $P(X \leq 9)$ is :

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The probability distribution of a random variable X is given below :

X	0	1	2	3	4
P(X)	0.1	0.25	0.3	0.2	0.15

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11 Aug Shift 1

In a binomial distribution the probability of getting success is $\frac{1}{4}$ And standard deviation is 3 then its mean is ?