The median of the following distribution is 14.4 and the total frequency is 20:

Class interval	0–6	6–12	12–18	18–24	24–30
Frequency	4	x	5	y	1

What is x equal to?

Which one of the following methods can be used to separate anthracene from a mixture…

If A and B are two events such that P(A) = 3/4 and P(B) =…

If the mode of the scores 10, 12, 13, 15, 15, 13, 12, 10, x…

In a binomial distribution, the mean is 2 and variance is 5/9. What is the…

A coin is tossed twice. If E and F denote occurrence of head on first…