Important MCQS Probability Questions – 1

This Quiz contains Multiple Choice Questions about MCQs Probability Questions. It covers the topics of events, experiments, mutually exclusive events, collectively exhaustive events, sure events, impossible events, addition and multiplication laws of probability, etc. Let us start MCQs Probability Questions with Answers:

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

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

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

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

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

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

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

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

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

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

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

12. The range of probability is

13. On 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. The sample space (experimental outcomes) refers to

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

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

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

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

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

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

MCQs Probability Questions

• The Complement of $P(A|B)$ is
• The probability of an intersection of two events is computed by using the
• If two events $A$ and $B$ are mutually exclusive events, then
• The range of probability is
• In a statistical experiment, each time the experiment is repeated
• The set of all possible outcomes (sample points) is called
• The sample space (experimental outcomes) refers to
• An experiment that consists of tossing 4 coins successively. The number of sample points in this experiment is
• On 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?
• If $P(A)=0.5$ and $P(B)=0.5$, then $P(A \cap B)$ is
• If $A$ and $B$ are independent events with $P(A)=0.6$ and $P(B)=0.6$, then $P(A \cap B)=$?
• If events $A$ and $B$ are independent events with $P(A)=0.2$ and $P(B)=0.6$, then $P(A \cup B)=$?
• If $A$ and $B$ are independent events with $P(A)=0.4$ and $P(B)=0.25$, then $P(A \cup B)=$?
• Events $A$ and $B$ are mutually exclusive. Which of the following statements is true?
• If events $A$ and $B$ are independent events with $P(A)=0.05$ and $P(B)=0.65$, then $P(A|B)=$?
• A six-sided die is tossed three times. The probability of observing three ones in a row is
• If $P(A|B)=0.3$
• If events $A$ and $B$ are independent events with $P(A)=0.1$ and $P(B)=0.4$, then
• If $P(A|B)=0.3$ and $P(B)=0.8$, then
• If $P(A)=0.6$, $P(B)=0.3$, and $P(A \cap B)=0.2$, then $P(B|A)=$?

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23 thoughts on “Important MCQS Probability Questions – 1”

1. If X is a random variable, then Var(2 – 3X) is
plz explain.

Reply
• Please always refer to the question you are asking about. It becomes very difficult to trace the actual question (from MCQs tests) to identify and answer it properly.
The question you are asking about is very simple. Just use the addition, subtraction and multiplication property of the variance.
$Var(2) + 3^2 Var(X)=0+9Var(X)=9Var(X)$

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2. Thanks
it is good.

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3. ANSWER OF QUESTION # 3 IS NOT CORRECT PLEASE CHECK

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• Please provide the Question statement and test number for correction if there is any.

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4. So interesting

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5. good effort

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6. Excellent input provided to strengthen the concepts. Thanks a lot

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7. very nice

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8. Great MCQS of Statistic for NTS Test, PPSC

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9. sir q#19 mai b problem hai…. check it out too…..agar symetric ka concern p se hai to explanation mai n q dia hua hai ?? plz clear it

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• can you send the statement of question, it will be easy for me to find. In test all questions and even there answers are randomly displayed.

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10. sir q#7 ka ans galat hai….sawal mai to deck of cards hai or ans mai pair of dice….check it plz

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• correction is made. Please whenever anyone found error do contact with test number and initial statement, so that I can easily search and correct the problem.

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11. Great work by Admin

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12. how can i find answer of that?

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• To have answer of each MCQs, click the start button to start with MCQ test. Click the option which you consider most appropriate to questions. If your choice is correct you will see the right sign on option otherwise a cross.
Thanks for visiting the site.

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• Sir can you solve this question
(If Y=5X + 10 and X is N(10,25), then mean of Y is, Ans is 60)
i cant understand kindly prove it

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• N(10, 25) indicate the X point. put it in equation Y=5*10 + 10 results in 60.

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• The mean of normal distribution is 10 so Y= 5x +10
E(y) = 5E(x) +10
E (y) =5(10) + 10
= 50 + 10
= 60

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• How do I download in pdf of all the mcq given. Thank you

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• In almost all statistics MCQs test download link is available.

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13. nice practice assignments

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