# ISS Statistics Paper II (New 2016 MCQ Pattern): Questions 239 - 242 of 246

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## Question number: 239

MCQ▾

### Question

The denominator in the Cramer-Rao inequality is known as

### Choices

Choice (4) Response

a.

Upper bound of the Variance

b.

Lower Bound of the variance

c.

Information Limit

d.

None of the above

## Question number: 240

MCQ▾

### Question

Suppose we want to find out the mean milk yield of the cows in India, a survey of 66831 cows was made and the mean milk yield was 12.5 liter with a standard deviation of 4.3 liter. Then the 95 % confidence interval for the average milk yield is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 241

MCQ▾

### Question

For a normal population , the variance of the sample mean and sample variance are given by and . Then which of the following is true?

### Choices

Choice (4) Response

a.

Sample mean is more efficient estimator for than the sample median

b.

Sample mean and Sample median are efficient

c.

Sample median is more efficient estimator for than the sample mean

d.

All of the above

## Question number: 242

MCQ▾

### Question

A Statistical Hypothesis, which does not specifies the population completely, is known as

### Choices

Choice (4) Response

a.

Composite Hypothesis

b.

Simple Hypothesis

c.

Null Hypothesis

d.

Alternative Hypothesis