# MCQs Probability-1

This Quiz contains Multiple Choice Questions about Probability and probability distribution, event, experiment, mutually exclusive events, collectively exhaustive events, sure event, impossible events, addition and multiplication laws of probability, discrete probability distribution and continuous probability distributions, etc. Let us start MCQs Probability with Answers:

If X is a random variable, then Var(2 – 3X) is

plz explain.

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.

$Var(2) + 3^2 Var(X)=0+9Var(X)=9Var(X)$

Thanks

it is good.

ANSWER OF QUESTION # 3 IS NOT CORRECT PLEASE CHECK

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

So interesting

good effort

Excellent input provided to strengthen the concepts. Thanks a lot

very nice

Great MCQS of Statistic for NTS Test, PPSC

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

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.

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

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.

Great work by Admin

how can i find answer of that?

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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

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

The mean of normal distribution is 10 so Y= 5x +10

E(y) = 5E(x) +10

E (y) =5(10) + 10

= 50 + 10

= 60

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

In almost all statistics MCQs test download link is available.

nice practice assignments