# ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 357 - 361 of 472

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## Question 357

### Question

MCQ▾

Suppose someone wants to estimate Prime minister՚s approval rating by asking persons drawn at random from the voter population. Let

Now if he/she want to be confident that he/she is within of the actual approval rating then from how many (minimum number of) people he should ask?

### Choices

Choice (4)Response

a.

25,000

b.

10,000

c.

1000

d.

50,000

## Question 358

### Question

MCQ▾

Let random variables , be independent Poisson random variables. So if then, which of the following is the characteristic function of if ?

### Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

## Question 359

### Question

MCQ▾

Let and be independent; each is uniformly distributed on Let , then ________.

### Choices

Choice (4)Response

a.

b.

1

c.

d.

## Question 360

### Question

MCQ▾

If and are independent discrete random variables with the non-negative integers as range, and with distribution function then, what is the distribution of ?

### Choices

Choice (4)Response

a.

Poission distribution

b.

Geometric distribution

c.

Negative binomial distribution

d.

Question does not provide sufficient data or is vague

## Question 361

### Question

MCQ▾

Let be independent count r. v. s. If the are identically distributed, each with Probability generating function then has Probability generating function________.

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague