# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 148 - 153 of 253

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## Question number: 148

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MCQ▾

### Question

It is given that sample mean is 127.3, standard deviation is 19 and sample size is 3534. Then the 95 % confidence Interval is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 149

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MCQ▾

### Question

Confidence Interval (CI) is based on

### Choices

Choice (4) Response

a.

The point estimate or sample mean

b.

Standard error of the point estimate

c.

Desired level of confidence

d.

All a. , b. and c. are correct

## Question number: 150

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MCQ▾

### Question

Cramer-Rao Inequality provides a ________ to the variance of an unbiased estimator for a parameter.

### Choices

Choice (4) Response

a.

Upper bound

b.

Lower bound

c.

Upper bound and Lower bound

d.

None of the above

## Question number: 151

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MCQ▾

### Question

________ states that there is statistical difference between two variables.

### Choices

Choice (4) Response

a.

Simple Hypothesis

b.

Null Hypothesis

c.

Alternative Hypothesis

d.

Statistical hypothesis

## Question number: 152

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MCQ▾

### Question

In a college survey, children were asked how many hours they study per day. A sample of 22 children is collected. The mean was 3.25 hours with a standard deviation of 1.57 hours. Then 95 % confidence interval for the number of hours of study per day is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 153

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MCQ▾

### Question

A hypothesis that says there is no statistical significance between the two variables is known as

### Choices

Choice (4) Response

a.

Null hypothesis

b.

Composite hypothesis

c.

Alternative Hypothesis

d.

Simple Hypothesis