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Correct Answer:- Option-D
Question52A probability distribution in which mean is equal to variance is
‘A:Binomial
B-Gamma
C:Normal
D:-Poisson
Correct Answer:- Option-D
(Question53~-An experiment succeeds twice as often as it fails. The chance that in the next six trials, there shall be atleast four successes is

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Correct Answer:- Option-D
Question54=The skewness in a binomial distribution will be zero, if

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Correct Answer: Optin-D
Question55:The characteristic function of Poisson distribution is
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Correct Answer Option-¢
Question56:The coefficient of variation of Poisson distribution with mean 4 is

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Correct Answer:- Option -B

(Question 7=1FX is a normal variate representing the income in Rs. per day with mean=50 and S.D=10. If the number of workers in a factory is 1200, then the number of workers having income mor

=0.3849 where 2 is a standard normal variate)
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Correct Answer:- Option-C
QuestionS8-1FX ~ Exp(S), then the probability density function of X is
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Correct Answer:- Option-A
(Question59-"The distribution for which mode does not exist is
Avnormal
B:-tdistribution
C+continuous rectangular distribution
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Correct Answer:- Option-C

Question60:-Assume that the height of students is distributed as Nu, 7). Out of a large number of students, 5 percent are above 72 inches and 10 percent are below 60 inches. The mean and S.D. 0

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Question6 1A box contains 12 items out of which 4 are defective. A person selects 6 items from the box. The expected number of defective items out of his selected items is
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