# Statistical Inference and Hypothesis Testing-Confidence Interval Estimation (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 31 - 34 of 73

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## Question number: 31

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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.

Confidence interval

b.

Time interval

c.

Normal interval

d.

Maximum Interval

## Question number: 32

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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: 33

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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: 34

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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 % and 99 % confidence interval for the number of hours of study per day is

### Choices

Choice (4) Response

a.

and

b.

and

c.

and

d.

All of the above

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