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 471 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

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

f Page