Recent questions tagged probability distributions

+2 votes

1 answer

1. Who inaugurates the Indian Premier League? 2. How many ***** will participate in the half marathon?

asked Apr 2, 2019 in Class 12 by kratos

+1 vote

1 answer

The random variable X can take only values 0, 1, 2, 3. Given that P(X = 0) = P(X - 1) = p and P(X = 2) = P(X = 3)

asked Mar 28, 2019 in Class 12 by kratos

+3 votes

1 answer

Sixteen cards are labelled as a, b, c, ........ m, n , o, p. They are put in a box and shuffled.

asked Mar 27, 2019 in JEE by kratos

+2 votes

1 answer

‘Mittil Ltd’ is a leading company for manufacturing of soft toys for ********.

asked Mar 26, 2019 in Class 12 by kratos

+3 votes

1 answer

5 students of a class have an average height 150 cm and variance 18 cm^2. A new student, whose height is 156 cm,

asked Mar 23, 2019 in JEE by kratos

+3 votes

1 answer

In a lottery, a person choose, six different natural numbers at random from 1 to 20,

asked Mar 19, 2019 in Class 12 by kratos

+2 votes

1 answer

The random variable X has the cumulative distribution function F(x) = x/12, 0 ≤ x ≤ 12.

asked Mar 18, 2019 in Class 12 by kratos

+1 vote

1 answer

A box contains 1 red and 3 identical white *****. Two ***** are drawn at random in succession without replacement.

asked Mar 16, 2019 in Class 12 by kratos

+2 votes

1 answer

Medically it is advised to all young mothers that breastfeeding is the best for their newborn ******. Do you agree ?

asked Mar 15, 2019 in Class 12 by kratos

+2 votes

1 answer

The mean and variance of a binomial distribution are 12 and 3 respectively. Find the probability distribution.

asked Mar 10, 2019 in JEE by kratos

+3 votes

1 answer

An experiment succeeds thrice as often as it fails. Find the probability that in the next five trials, there will be at least 3 successes.

asked Mar 10, 2019 in Class 12 by kratos

+3 votes

1 answer

A *** has 6 faces marked by the given numbers as shown below: The *** is thrown once.

asked Mar 8, 2019 in Mathematics by kratos

+2 votes

1 answer

Find the value of k for which the quadratic equation (k-2)x^2 + 2(2k-3)x + (5k-6) = 0 has equal roots.

asked Mar 8, 2019 in JEE by kratos

+2 votes

1 answer

In a hurdle race, a player has to cross 10 hurdles. The probability that he will clear each hurdle is 5/6.

asked Mar 6, 2019 in Class 12 by kratos

+1 vote

1 answer

Let X be a random variable with mean µ and standard deviation σ > 0 X* = x - µ/ σ. Then Var(X*) is

asked Mar 6, 2019 in Class 12 by kratos

+1 vote

1 answer

An unbiased coin is tossed 4 times. Find the mean and variance of number of heads obtained.

asked Mar 4, 2019 in JEE by kratos

+1 vote

1 answer

There are 4 coins in a row and all are showing heads to start with. The coins can be flipped with the following rules :

asked Feb 28, 2019 in Class 12 by kratos

+1 vote

1 answer

(Miss Babitha wants to buy a new television. She visits a showroom and speaks to the salesperson).

asked Feb 23, 2019 in Class 12 by kratos

+3 votes

1 answer

Let X denote the number of hours you study during a randomly selected school day.

asked Feb 19, 2019 in Class 12 by kratos

+2 votes

1 answer

Five cards are drawn successively with replacement from a well shuffled deck of 52 cards. What is the probability that

asked Feb 18, 2019 in Class 12 by kratos

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