If `x and y` are random variables having expected values as `4.5 and 2.5` respectively, then the expected value of `(x-y)` is

Choose the correct alternative : If x and y are random variables with expectations 3 and 5 respectively, then expectation of (3x - 5y) is-

Find out the correct answer out of the options given against each questions : If x and y are random variables with expectations 3 and 5 respectively, then expectation of (3x - 5y + 16) is

If X is a binomial random variable with expected value 6 and variance 2.4, then P(X=5) is

2 dice are thrown. Suppose a random variable X is assigned a value 2k, if the sum on the dice is equal to k, then the expected value of X is

2 dice are thrown. Suppose a random variable X is assigned a value 2k, if the sum on the dice is equal to k, then the expected value of X is

Let x and y be two independent random variables having variance k and 2 respectively if the variance of z=3y -x be 25 find k

If for a random variable x, the variance of x is 1.84 and the expectation of x is 3.6, then the expectation of x^2 is

Let x and y be two independent random variables having variances k and 2 respectively.If the variance of z=3y-x be 25, find k.

Let coordinates of point P be (4,5). If A and B are variable points on straight lines x=y and 2x-y=0 respectively,then the minimum value of PA+PB+AB is