Probability-Probability Distributions [ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)]: Questions 1 - 4 of 108

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Question 1

Probability Distributions
Exponential

Question

MCQ▾

Suppose that has the exponential distribution with rate parameter . Then which of the following statement is/are correct regarding it?

Choices

Choice (4)Response

a.

has the geometric distributions on with success parameter .

b.

has the geometric distributions on with success parameter .

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question 2

Probability Distributions
Negative Binomial

Question

MCQ▾

Which of the following statement is/are correct?

Choices

Choice (4)Response

a.

Pascal distribution is a special case of negative binomial distribution on with parameter and , when k is a positive integer.

b.

Pascal distribution is a special case of Normal distribution with parameter , when

c.

The pdf of Pascal distribution is symmetric.

d.

All of the above

Question 3

Probability Distributions
Uniform

Question

MCQ▾

If , then what will be the standard deviation of ?

Choices

Choice (4)Response

a.

59.8

b.

261.2

c.

161.4

d.

120.5

Question 4

Probability Distributions
Bernoulli

Question

MCQ▾

Which of the following is skewness of a standardized Bernoulli distributed random variable which takes the value 1 with success probability of and the value 0 with failure probability of ?

Choices

Choice (4)Response

a.

b.

c.

d.

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