# ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 228 - 232 of 472

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## Question number: 228

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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

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MCQ▾

### 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

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MCQ▾

### 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

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