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Recent questions tagged probability-distribution-of-a-random-variable

If the integers m and n are chosen at random between 1 and 100, then the probability that a number of the form $ 7^m+7^n$ is divisible by 5 equals.

asked Jan 8, 2014 by thanvigandhi_1

1 answer

The mean and variance of a binomial variate X are 2 and 1 respectively. The probability that X takes a value greater than 1 is

asked Jan 8, 2014 by thanvigandhi_1

1 answer

For a poisson variate X if $P(X=0) = 0.2$ then its variance is

asked Jan 6, 2014 by thanvigandhi_1

1 answer

Let A,B,C be three equally likely and collectively exhaustive events. If the odds 8 : 3 against A, 5:2 against B then the odds against C are

asked Jan 6, 2014 by thanvigandhi_1

1 answer

Three houses are available in a locality. Three persons apply for the houses. Each applies for one house without consulting others. The probability that all the three apply for the same house is :

asked Jan 3, 2014 by thanvigandhi_1

1 answer

A family has 4 children. A child is selected at random from the family. Assuming that there are equal number of boys and girls in the family, the probability that the selected child is a girl is

asked Jan 2, 2014 by thanvigandhi_1

1 answer

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