Statistical Inference and Hypothesis Testing-Confidence Interval Estimation (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 13 - 16 of 73

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Question number: 13

» 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 x¯ is known as ………. and Zα2 is known as ……………….

Choices

Choice (4) Response
a.

Critical value, Standard Deviation

b.

Control limit, variance

c.

Point estimate, Standard Error

d. All of the above

Question number: 14

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

It is given that sample size n=50 , sample mean x¯=69 and sample standard deviation s=2 . Then 95 % Confidence Interval would be

Choices

Choice (4) Response
a.

[68.46, 69.54]

b.

[56.51, 68.6]

c.

[50, 69]

d. All of the above

Question number: 15

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

It is given that x¯=10.3 , n=14 and s=2.6 . Then the 95 % Confidence Interval for μ is

Choices

Choice (4) Response
a.

[18.81, 11.79]

b.

[8.81, 10.79]

c.

[0.81, 1.79]

d.

[8.81, 11.79]

Question number: 16

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

The Government conducts national survey to study about the home gardening.

A random sample of 250 households is taken, which have their own vegetable gardens. The average size of their gardens is 643 sq. ft. The calculated standard deviation is σ = 247 sq. ft. Then 90 % confidence interval for the mean size µ, of all household vegetable gardens is

Choices

Choice (4) Response
a.

[643.31,698.69]

b.

[612.31,686.69]

c.

[617.31,668.69]

d.

[247.31,250.69]

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