Two cards are drawn successively with replace | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Total number of cards $= 52$. Total number of queens $= 4$. Probability of getting a queen in one draw,$p = \frac{4}{52} = \frac{1}{13}$. Probabil

Vedclass · Accepted Answer

$\frac{2}{13}$

Vedclass · Answer

(C) Total number of cards $= 52$. Total number of queens $= 4$. Probability of getting a queen in one draw,$p = \frac{4}{52} = \frac{1}{13}$. Probability of not getting a queen,$q = 1 - p = \frac{12}{13}$. Since the cards are drawn with replacement,this follows a binomial distribution $B(n, p)$ with $n = 2$ and $p = \frac{1}{13}$. The mean of a binomial distribution is given by $E(X) = np$. $E(X) = 2 	imes \frac{1}{13} = \frac{2}{13}$.

Two cards are drawn successively with replacement from a well-shuffled pack of $52$ cards. The mean of the number of queens is:

Similar Questions

Find the probability distribution of the number of doublets in three throws of a pair of dice.

Two cards are drawn successively with replacement from a well-shuffled deck of $52$ cards. The mean of the number of aces is:

$A$ die is thrown $100$ times. If the success is defined as getting an even number,then the variance of the number of successes is:

Let a biased coin be tossed $5$ times. If the probability of getting $4$ heads is equal to the probability of getting $5$ heads,then the probability of getting at most two heads is

The probability of a man hitting a target is $3/4$. He tries $5$ times. What is the probability that he hits the target at least $3$ times?

Vedclass Test Series

Exam Paper Generator

Online Exam Module