Recent questions tagged probability

2 votes
1 answer
512
Let the random variable X represent the number of times a fair coin needs to be tossed till two consecutive heads appear for the first time. The expectation of X is _____...
1 votes
1 answer
513
The probability of a man hitting a target in one fire is 1/6. The number of times at least he must fire at the target in order that his chance of hitting the target at le...
0 votes
1 answer
514
0 votes
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515
Let X and Y be two exponentially distributed and independent random variables with mean α and β, respectively.If Z = MAX (X,Y), then the mean of Z is given by
0 votes
0 answers
520
A) (1-(N / K)) ^ r b) (1-(K / N)) ^ r c) (1+(N / K)) ^ r-1 d) (1-(K / N)) ^ r-1
4 votes
2 answers
521
0 votes
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526
I learnt that if probability of an event is 0 then this is indepe​​​​​​ndent of all other events and mathematics also second that statement.Can anyone explain...
0 votes
0 answers
530
Chandler is selling tickets for \$1 per ticket. In the queue for tickets, there are ‘m‘ people with a single \$1 coin and 2 with a \$2 coin. Each person in the queue ...
1 votes
0 answers
531
2 votes
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534
If $P(A \cap B) = \frac{1}{2}, \: P(\overline{A} \cap \overline{B}) = \frac{1}{2}$ and $2P(A)=P(B)=p$, then the value of $p$ is given by:$\frac{1}{4}$$\frac{1}{2}$$\frac{...
0 votes
0 answers
536
what is the probability that in a group of n people chosen at random, there are atleast two people born in the same month of the year?
0 votes
1 answer
538
15 students among whom are A and B arranged randomly in a row. Obtain the probability that there will be 3 students between A and B?
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540
From a deck of 52 cards, what is the probability of picking 2 kings:a)With replacementB)Without replacement Please explain in details. I am new to probability. Thank you....