# Probability-Probability Distributions (ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)): Questions 18 - 22 of 108

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 472 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

How to register?

## Question number: 18

» Probability » Probability Distributions » Multinomial

MCQ▾

### Question

Which of the following statement is/are incorrect regarding Multinomial experiment?

### Choices

Choice (4) Response

a.

There are fixed number of repeated trails.

b.

Every trial has a fix possible number of outcomes.

c.

The trials are dependent on each other.

d.

Question does not provide sufficient data or is vague

## Question number: 19

» Probability » Probability Distributions » Poisson

MCQ▾

### Question

If water supply failures occur according to a Poisson distribution with an average of 5 failures every ten weeks, calculate the probability that there will not be more than one failure during a particular week

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 20

» Probability » Probability Distributions » Uniform

MCQ▾

### Question

The amount of time, in minutes, that a person must wait for a bus is uniformly distribute between 5 and 20 minutes, inclusive. On the average, how long must person wait?

### Choices

Choice (4) Response

a.

7.5 minutes

b.

12.5 minutes

c.

10 minutes

d.

None of the above

## Question number: 21

» Probability » Probability Distributions » Exponential

MCQ▾

### Question

Suppose that the lifetime of a bulb is modeled by an exponential distribution with (unknown) parameter λ. We test 5 bulbs and find they have lifetimes of 2,3, 1,3, and 4 years, respectively. What is the MLE for λ?

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

## Question number: 22

» Probability » Probability Distributions » Cauchy

MCQ▾

### Question

If has the standard Cauchy distribution, then will follow________.

### Choices

Choice (4) Response

a.

A Student t distribution with 2 degree of freedom.

b.

A Chi-square distribution.

c.

A Laplace distribution.

d.

None of the above