# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 173 - 178 of 253

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## Question number: 173

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MCQ▾

### Question

A range computed using sample statistics to estimate an unknown population parameter with a given level of confidence is known as

### Choices

Choice (4)Response

a.

Maximum Interval

b.

Normal interval

c.

Confidence interval

d.

Time interval

## Question number: 174

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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

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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

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MCQ▾

### Question

Rao-Blackwell Theorem enables us to obtain MVUE through:

### Choices

Choice (4)Response

a.

Sufficient statistics

b.

Unbiased Estimator

c.

Complete Statistics

d.

Efficient statistics

## Question number: 177

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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

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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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