Probability-Probability Distributions (ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)): Questions 31 - 34 of 109

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Question number: 31

» Probability » Probability Distributions » Laplace

MCQ▾

Question

The characteristic function of standard Laplace distribution is ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 32

» Probability » Probability Distributions » Negative Binomial

MCQ▾

Question

Suppose that Equation and Equation are independent random variables for an experiment, and that Equation Negative Binomial distributionEquation and Equation Negative Binomial distributionEquation . Then

Choices

Choice (4) Response

a.

Binomial distributionEquation

b.

Negative Binomial distributionEquation

c.

Negative Binomial distributionEquation

d.

None of the above

Question number: 33

» Probability » Probability Distributions » Cauchy

MCQ▾

Question

Which of the following statement is correct regarding the pdf of standard Cauchy distribution?

Choices

Choice (4) Response

a.

It increases and then decreases, with mean Equation .

b.

It is concave upward, then downward, and then upward again, with inflection points atEquation .

c.

It is symmetric about its mean.

d.

None of the above

Question number: 34

» Probability » Probability Distributions » Normal

MCQ▾

Question

If Equation are i. i. d with standard normal distributions, the value of Equation so that the random variable Equation has a t-distribution is________.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

All of the above

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