Statistical Inference and Hypothesis Testing (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 124 - 128 of 222

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Question number: 124

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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.

[120.5, 126.67]

b.

[126.67, 127.29]

c.

[127.3, 130.56]

d.

[127.29, 126.67]

Question number: 125

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

Confidence Interval (CI) is based on

Choices

Choice (4) Response

a.

The point estimate or sample mean

b.

Desired level of confidence

c.

Standard error of the point estimate

d.

All a. , b. and c. are correct

Question number: 126

» Statistical Inference and Hypothesis Testing » Cramer-Rao Inequality

MCQ▾

Question

Cramer-Rao Inequality provides a ________ to the variance of an unbiased estimator for a parameter.

Choices

Choice (4) Response

a.

Lower bound

b.

Upper bound

c.

Upper bound and Lower bound

d.

All of the above

Question number: 127

» Statistical Inference and Hypothesis Testing » Simple and Composite Hypotheses

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: 128

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

Choices

Choice (4) Response

a.

[3.25, 5.33]

b.

[1.17, 1.57]

c.

[1.17, 5.33]

d.

[3.1, 5.9]

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