ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 136 - 142 of 253

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Question 136

Question

MCQ▾

It is given that sample size , sample mean and sample standard deviation . Then 95 % Confidence Interval would be

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Question 137

Question

MCQ▾

It is given that , and . Then the 95 % Confidence Interval for is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 138

Question

MCQ▾

If and are two estimators for , such that and , then

Choices

Choice (4)Response

a.

b.

c.

Either or

d.

None of the above

Question 139

Question

MCQ▾

Generally the estimators obtained by the method of moments as compared to Maximum Likelihood estimators are:

Choices

Choice (4)Response

a.

Equally Efficient

b.

More Efficient

c.

Less Efficient

d.

All of the above

Question 140

Question

MCQ▾

Which of the following options is appropriate for the Cramer-Rao Inequality, where

is an unbiased estimator -

Choices

Choice (4)Response

a.

b.

c.

d.

Question 141

Question

MCQ▾

For a normal population , the variance of the sample mean and sample variance are given ‎ . Then the efficiency of median against mean is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 142

Question

MCQ▾

The Government conducts national survey to study about the home gardening.

A random sample of 250 households is taken, which have their own vegetable gardens. The average size of their gardens is 643 sq. ft. The calculated standard deviation is σ = 247 sq. ft. Then 90 % confidence interval for the mean size µ, of all household vegetable gardens is

Choices

Choice (4)Response

a.

b.

c.

d.