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Correct Answer:- Option-D
Question52:-A probability distribution in which mean is equal to variance is
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B:Gamma
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D:-Poisson
Correct Answer:- Option-D
Question53:-An experiment succeeds twice as often as it faiks. 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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‎‘Question55:The characteristic function of Poisson distribution is.‏

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‎‘Question56:The coefficient of variation of Poisson distribution with mean 4 is

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Correct Answer:- Option B

Question57+1£ X is a normal variate representing the income in Rs. per day with mean=50 and $.0=10. If the number of workers in a factory is 1200, then the number of workers having income mor

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10500585133 - Exp(3), then the probabiity densiy function of X is
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‎Correct Answer:- Option-A
Question59:The distribution for which mode does not exist is
Acnormal
B:tdistribution
Ccontinuous rectangular distribution
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‎Correct Answer:- Option-D
Question6 1:-A 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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Correct Answer:- Option-A
ರ X is a normal variate with mean 20 and variance 64, the probability that X lies between 12 and 32 is

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