# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 27 - 32 of 253

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## Question number: 27

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MCQ▾

### Question

If are normally distributed random variables with mean μ and variance , Then the unbiased estimator of is -

### Choices

Choice (4)Response

a.

b.

c.

None of the above

d.

All of the above

## Question number: 28

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MCQ▾

### Question

Suppose we have two consistent estimators and of a parameter , then is more efficient than if

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 29

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MCQ▾

### Question

A random sample of size 5 is drawn from a normal population with unknown mean . Then is a unbiased estimator of

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 30

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MCQ▾

### Question

Let be a random sample from Bernoulli population with parameter , . If ,

### Choices

Choice (4)Response

a.

The conditional distribution does not depend on

b.

Is Sufficient for

c.

Is not sufficient for

d.

Both a. and b. are correct

## Question number: 31

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MCQ▾

### Question

If T is an unbiased estimator for , then is

### Choices

Choice (4)Response

a.

Biased estimator of

b.

Unbiased estimator

c.

None of the above

d.

Question does not provide sufficient data or is vague

## Question number: 32

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MCQ▾

### Question

A formula or rule used for estimating the parameter is called:

### Choices

Choice (4)Response

a.

Estimation

b.

Statistic

c.

Estimate

d.

Estimator

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