ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 179 - 182 of 253

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Question number: 179

» 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 % and 99 % confidence interval for the number of hours of study per day is

Choices

Choice (4) Response

a.

and

b.

and

c.

and

d.

Question does not provide sufficient data or is vague

Question number: 180

» Statistical Inference and Hypothesis Testing » Sufficient Estimator

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Question

A statistic is called as ________ Estimator for the parameter θ, if the conditional distribution of given T does not depend on θ.

Choices

Choice (4) Response

a.

Sufficient

b.

Maximum Likelihood estimator

c.

Efficient

d.

Unbiased

Question number: 181

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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Question

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 number: 182

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

b.

c.

d.