# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 174 - 178 of 246

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## Question number: 174

MCQ▾

### Question

Formula for 95 % Confidence interval for the variance of the Normal distribution when is known, is given by

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 175

MCQ▾

### Question

For a normal population , the variance of the sample mean and sample variance are given ‎. Then the efficiency of mean against median is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 176

MCQ▾

### Question

Rao-Blackwell Theorem enables us to obtain MVUE through:

### Choices

Choice (4) Response

a.

Efficient statistics

b.

Complete Statistics

c.

Sufficient statistics

d.

Unbiased Estimator

## Question number: 177

MCQ▾

### Question

A 95 % confidence interval is shown as . This means

### Choices

Choice (4) Response

a.

Probability that lies in the interval 60.84 and 96.5 is 0.95

b.

The length of the confidence interval is 35.66

c.

60.84 and 96.5 are 95 percent confidence limits

d.

All a. , b. and c. are correct

## Question number: 178

MCQ▾

### Question

If is an MVU estimator of for all and is any other unbiased estimator of with efficiency , then the correlation coefficient between is given by

all

### Choices

Choice (4) Response

a.

for all

b.

for all

c.

for all

d.

for all

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