# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 210 - 214 of 253

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## Question number: 210

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MCQ▾

### Question

If a most efficient estimator and a less efficient estimator with efficiency tend to joint normality for large samples, has ________ correlation with

### Choices

Choice (4)Response

a.

Zero

b.

No correlation

c.

Negative

d.

All of the above

## Question number: 211

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MCQ▾

### Question

Suppose we have , , Then to compute 95 % confidence for which critical point is used?

### Choices

Choice (4)Response

a.

b.

c.

zα=z0.025α

d.

## Question number: 212

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MCQ▾

### Question

An estimator is efficient, if its variance is________ the variance of any other estimator.

### Choices

Choice (4)Response

a.

Similar to

b.

More than

c.

Less than

d.

Either b or c

## Question number: 213

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MCQ▾

### Question

Suppose we wish to estimate the average height of the tigers in India. We take a sample of 130 tigers and measure their heights. The mean height is 98.249 cms. The calculated standard deviation is cms, then the confidence interval for the population mean at 95 % confidence limit is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 214

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MCQ▾

### Question

Suppose we want to estimate the average weight of cow in India. We draw a random sample of 1,000 cows and weigh them. The mean was 180 pounds with a standard deviation of 30 pounds. What is the 95 % confidence interval?

### Choices

Choice (4)Response

a.

b.

c.

d.

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