Probability Questions
Statistics 101 - Probability and Statistics Past Papers

Practice 10 past-paper questions for Probability in Statistics 101 - Probability and Statistics. Get solutions and exam preparation resources.

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1. In a colony, there are 55 members. Every member posts a greeting card to all the members. How many greeting cards were p…

2. Find the number of all possible samples from a population containing 8 items from which 2 items are selected at random w…

3. Bag 1 contains 4 white and 6 black balls while another Bag 2 contains 4 white and 3 black balls. One ball is drawn at ra…

4. A bag contains 3 red, 2 white and 4 green balls. What is the probability of drawing the second ball to be green if the f…

5. If A and B are two mutually exclusive events such that P(A) = 0.4 and P(AUB) = 0.6 then P(B)=

6. If A and B are two events such that P(A) = 0.2, P(B) = 0.6 and P(A|B) = 0.2 then the value of P(A|B) is

7. (a) A class consists of seven boys and nine girls. Two different students are chosen at random. Let A be event the first…

8. X is a discrete random variable with the probability mass function $f(x) = \frac{4}{x(x+1)}$ for $x = 1, 2, 3, ...$. Fin…

9. Let X denote the number of patients who suffer an infection within a floor of a hospital per month with the following pr…

10. In a certain group of computer personnel, 65% have sufficient knowledge of hardware, 45% have adequate idea of software…

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