# Probability-Probability Distributions (ISS Statistics Paper I (New 2016 MCQ Pattern)): Questions 84 - 87 of 109

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## Question number: 84

» Probability » Probability Distributions » Random Vectors

MCQ▾

### Question

What is the distribution function of a random variable which have following density function?

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

## Question number: 85

» Probability » Probability Distributions » Beta

MCQ▾

### Question

If then has ________ distribution

### Choices

Choice (4) Response

a.

Uniform

b.

Normal

c.

Cauchy

d.

None of the above

## Question number: 86

» Probability » Probability Distributions » Joint and Marginal Distributions

MCQ▾

### Question

The cumulative distribution function for the joint distribution of the continuous random variables and is . What is the value of

### Choices

Choice (4) Response

a.

0.9

b.

3.2

c.

4.1

d.

None of the above

## Question number: 87

» Probability » Probability Distributions » Gamma

MCQ▾

### Question

Which of the following property is/are satisfied by a standard Gamma distribution with shape parameter ?

### Choices

Choice (4) Response

a.

If , is decreasing with as .

b.

If , is concave upward.

c.

If, is concave downward and then upward, with inflection point at .

d.

All a. , b. and c. are correct

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