ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 154 - 157 of 253

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Question number: 154

» Statistical Inference and Hypothesis Testing » Moments and Least Squares

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MCQ▾

Question

The estimators obtained by the method of moments under general conditions are ________efficient than Maximum Likelihood Estimators.

Choices

Choice (4) Response

a.

More

b.

Less

c.

Equally

d.

All of the above

Question number: 155

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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MCQ▾

Question

A school wants to study the number of days the students will be absent from school per year. It surveys attendance of 10 children and the number of days the children is absent from schools are

Samples from schools and days

What are the readings of the family?

12

13

9

11

7

8

4

9

5

8

Standard deviation Then 99 % Confidence interval on population mean is

Choices

Choice (4) Response

a.

5.64≤μ≤11.56

b.

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 156

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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MCQ▾

Question

A fan manufacturing company needs to know the average amount of time it takes to install a fan. A technique installs it in 64 different houses and the average time of installation is 42 minutes. The calculated standard deviation is 5 minutes. Then 95 % confidence interval foethe mean installation time is

Choices

Choice (4) Response

a.

b.

42 + 1.225

c.

d.

Both a. and c. are correct

Question number: 157

» Statistical Inference and Hypothesis Testing » Minimum Variance Unbiased Estimators

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MCQ▾

Question

Suppose are the unbiased estimators of with Efficiencies and respectively. and is the correlation coefficient between them. Then

Choices

Choice (4) Response

a.

b.

c.

d.