Statistical Inference and Hypothesis Testing-Confidence Interval Estimation (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 27 - 29 of 73

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Question number: 27

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

Consider the general form of confidence interval for the mean x¯Zα2σn .

In this expression Zα2 is known as ………. and σn is known as ……………….

Choices

Choice (4) Response

a.

Critical value, Standard Error

b.

Point estimate, Standard deviation

c.

Control limit, variance

d.

All of the above

Question number: 28

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

Suppose there is a survey carried out on 200 persons and the calculated mean and Standard Deviation are 5.83 and 0.86 respectively, then the confidence interval of 95 % of the population mean would be

Choices

Choice (4) Response

a.

[3.89, 5.89]

b.

[5.71, 5.95]

c.

[4.96, 5.71]

d.

Question does not provide sufficient data or is vague

Question number: 29

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

If x¯ and s are the mean and standard deviation of a random sample from a Normal distribution with unknown variance σ2 , a 100(1α) percent confidence interval on μ is given by

Choices

Choice (4) Response

a.

x¯zα2,(n1)snμx¯zα2,(n1)

b.

χ21(α/2)ns2σ2χ2(α/2)

c.

x¯tα2,(n1)snμx¯tα2,(n1)

d.

All of the above

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