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

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Question number: 148

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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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

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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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

» Statistical Inference and Hypothesis Testing » Cramer-Rao Inequality

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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

» Statistical Inference and Hypothesis Testing » Simple and Composite Hypotheses

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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

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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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

» Statistical Inference and Hypothesis Testing » Simple and Composite Hypotheses

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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