ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 228 - 232 of 471

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Question number: 228

» Probability » Law of Total Probability

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MCQ▾

Question

We roll a four sided die. If the result is 1 or 2, we roll once more but otherwise we stop. What is the probability that the sum total of our rolls is at least 4?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 229

» Probability » Probability Distributions » Poisson

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MCQ▾

Question

Which of the following situation/situations can be analyzed using Poission distribution?

Choices

Choice (4) Response

a.

Birth defects and genetic mutations

b.

Spread of an endangered animal in Africa

c.

Number of typing errors on a page

d.

All a. , b. and c. are correct

Question number: 230

» Probability » Bayes' Theorem and Applications

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Question

A is known to tell the truth in 3 cases out of 8 and he states that a white ball was drawn from a bag containing 6 blacks and 2 white ball. Find the probability that the white ball was drawn.

Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

Question number: 231

» Probability » Probability Distributions » Multinomial

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

Every trial has a fix possible number of outcomes.

b.

There are fixed number of repeated trails.

c.

The trials are dependent on each other.

d.

All of the above

Question number: 232

» Probability » Conditional Probability

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Question

Your neighbor has 2 children. You learn that he has a son, Rahul. What is the probability that Rahul’s sibling is a brother?

Choices

Choice (4) Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague