# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 181 - 186 of 253

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## Question 181

### Question

MCQ▾

A survey of 200 factory workers provides a sample mean of 7.10 hours worked. What is the 95 % confidence interval based on this sample. Calculated standard deviation is 5 hours.

### Choices

Choice (4)Response

a.

b.

c.

d.

Both b. and c. are correct

## Question 182

### Question

MCQ▾

The 99 % confidence interval for of the normal population is given by

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 183

### Question

MCQ▾

It is given that n = 1029, and . Then the 90 % Confidence Interval for the population mean is given by

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 184

### Question

MCQ▾

Suppose we take a random sample from some population and obtain a 96 % confidence interval for the population mean, , then which quantity is guaranteed to be in the interval?

### Choices

Choice (4)Response

a.

μ

b.

s

c.

d.

μ & s

## Question 185

### Question

MCQ▾

A Minimum Variance Unbiased Estimator is said to be unique if for any other estimator ,

### Choices

Choice (4)Response

a.

b.

c.

Neither (i) nor (ii)

d.

All of the above

## Question 186

### Question

MCQ▾

Given the probability statement that

Which of the following statement is correct in respect of given probability statement?

### Choices

Choice (4)Response

a.

The confidence interval is 11.32

b.

4.35 and 15.67 are 90 percent confidence limits

c.

Probability that lies in the interval 4.35 and 15.67 is 0.90

d.

All a., b. and c. are correct