21. |
Two unbiased coins are tossed. If one coin shows head, the probability that the other also show head is_____
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Answer:
Option (b) |
22. |
A die is tossed 5 times. Getting an odd number is considered a success. Then the variance of distribution of success is_____
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Answer:
Option (d) |
23. |
The probability that a student is not a swimmer is . The probability that out of 5 students exactly 4 are swimmers is _____
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Answer:
Option (b) |
24. |
If parameters of a binomial distribution are n=5 and p=0.30, then the mean is _____ and variance is_____
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Answer:
Option (b) |
25. |
If A and B are two events such that P(A) 0 and P(B) 0 then =_____
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Answer:
Option (c) |
26. |
If A and B are two events such that P(A)=, P(B)= and then =______
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Answer:
Option (b) |
27. |
If 4P(A) = 6P(B) = 10P =1 then =_____
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Answer:
Option (a) |
28. |
Three fair coins are tossed. If one of shows tail,then the probability that all three coins shows tail, is _____
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Answer:
Option (a) |
29. |
The mean of binomial distribution ,x=0,1,2,....., 10 is _____ .
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Answer:
Option (a) |
30. |
If A and B are two events such that P(A) 0 and =1 then_____
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Answer:
Option (a) |