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

An unbiased coin is tossed $n$ times. If the probability of getting at least one head is greater than $0.8$,then the least value of $n$ is

In a binomial distribution $B(n, p)$,the sum and product of the mean and variance are $5$ and $6$ respectively. Find the value of $6(n+p-q)$.

If a dice is thrown $5$ times,then the probability of getting $6$ exactly three times is:

$A$ dice is thrown two times. If getting an odd number is considered a success,then the probability of two successes is

If $X \sim B(4, p)$ and $P(X=0)=\frac{16}{81}$,then $P(X=4)=$

Vedclass Test Series

Exam Paper Generator

Online Exam Module