MCQs Probability-1

1. The probability of an intersection of two events is computed by using the

2. An experiment consists of tossing 4 coins successively. The number of sample points in this experiment is

3. If $A$ and $B$ are independent events with $P(A)=0.4$ and $P(B)=0.25$, then $P(A \cup B)=$?

4. If $P(A|B)=0.3$

5. In a statistical experiment, each time the experiment is repeated

6. A six-sided die is tossed three times. The probability of observing three ones in a row is

7. The sample space (experimental outcomes) refers to

8. If two events $A$ and $B$ are mutually exclusive events, then

9. If events $A$ and $B$ are independent events with $P(A)=0.1$ and $P(B)=0.4$, then

10. The range of probability is

11. If $A$ and $B$ are independent events with $P(A)=0.6$ and $P(B)=0.6$, then $P(A \cap B)=$?

12. The Complement of $P(A|B)$ is

13. One a December day, the probability of snow is 0.30. The probability of a “cold” day is 0.50. The probability of snow and a “cold” is 0.15. Do snow and “cold” weather are independent events?

14. If events $A$ and $B$ are independent events with $P(A)=0.05$ and $P(B)=0.65$, then $P(A|B)=$?

15. Events $A$ and $B$ are mutually exclusive. Which of the following statements is true?

16. If $P(A)=0.5$ and $P(B)=0.5$, then $P(A \cap B)$ is

17. If events $A$ and $B$ are independent events with $P(A)=0.2$ and $P(B)=0.6$, then $P(A \cup B)=$?

18. The set of all possible outcomes (sample points) is called

19. If $P(A)=0.6$, $P(B)=0.3$, and $P(A \cap B)=0.2$, then $P(B|A)=$?

20. If $P(A|B)=0.3$ and $P(B)=0.8$, then