# Statistical Inference and Hypothesis Testing (ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern)): Questions 177 - 181 of 222

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## Question number: 177

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

### Question

Degrees of freedom for the mean in case of large sample size is…………; and in case of for the small sample size is……. .

### Choices

Choice (4) Response

a.

and n

b.

and

c.

and

d.

and

## Question number: 178

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

MCQ▾

### Question

In a class of consistent estimators for a parameter, which one will you consider as the most efficient estimator?

### Choices

Choice (4) Response

a.

One whose mean and variance both are less than the other estimators.

b.

One whose sampling variance is less than the other estimators.

c.

One whose mean is less than the other estimators.

d.

Question does not provide sufficient data or is vague

## Question number: 179

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

### Question

It is given that , , . Then the Confidence Interval at is given by

### Choices

Choice (4) Response

a.

b.

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

## Question number: 180

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

MCQ▾

### Question

If T is an unbiased estimator for , then is biased estimator of

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 181

» Statistical Inference and Hypothesis Testing » Moments and Least Squares

MCQ▾

### Question

The set of equations obtained in the process of Least square estimation are called

### Choices

Choice (4) Response

a.

Simultaneous Equations

b.

Normal Equations

c.

Continuous Equations

d.

None of the above