Home
Class 12
MATHS
A fair coin is tossed 3 times. Let X be ...

A fair coin is tossed 3 times. Let X be the number of heads obtained.
Find E(X) and V(X).

A

(a) `1/2`

B

(b) `3/2`

C

(c) `2/3`

D

(d) `3/4`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

A fair coin is tossed 4 times.Let X denotes the number of heads obtained.Write down the probability distribution of X.Also find the formula for pmf of X.

When a coin is tossed 6 times then find the number of possible outcomes.

If a coin is tossed twice and X is the number of tails, then var(X)=

IF a coin is tossed twice and X is the number of tails, then E(X)= (a) 0 (b) 1 (c) 2 (d) 3

A coin is tossed four times,then the expected value of the number of heads is………

A fair coin is tossed 6 times.Find the probability that it shows a large number of heads than tails.

A fair coin is tossed three times . The probability that there is atleast one tail is