The probability of an event A happening in on | vedclass

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

Question

(B) Given,the probability of event $A$ occurring in one trial is $P(A) = 0.4$.Therefore,the probability of event $A$ not occurring in one trial is $P(

Vedclass · Accepted Answer

$0.784$

Vedclass · Answer

(B) Given,the probability of event $A$ occurring in one trial is $P(A) = 0.4$.Therefore,the probability of event $A$ not occurring in one trial is $P(\bar{A}) = 1 - 0.4 = 0.6$.For $n = 3$ independent trials,the probability that event $A$ does not happen at all is $P(	ext{none}) = (P(\bar{A}))^3 = (0.6)^3 = 0.216$.The probability that event $A$ happens at least once is given by $P(	ext{at least once}) = 1 - P(	ext{none})$.$P(	ext{at least once}) = 1 - 0.216 = 0.784$.

The probability of an event $A$ happening in one trial is $0.4$. The probability that the event $A$ happens at least once in three independent trials is

Similar Questions

For a binomial variate $X$,if $n=4$ and $P(X=4)=6 P(X=2)$,then the value of $p$ is

Out of $100$ people selected at random,$10$ have a common cold. If five persons are selected at random from the group,then the probability that at most one person will have a common cold is

$A$ pair of dice is thrown $4$ times. If getting a doublet is considered a success,find the probability of two successes.

The probability that a student is not a swimmer is $1/5$. What is the probability that $4$ out of $5$ students are swimmers?

The mean and variance of a binomial distribution are $5$ and $4$ respectively. Then what is $P(X=1)$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module