Statistical Inference and Hypothesis Testing (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 208 - 210 of 222

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Question number: 208

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

It is given that sample size n = 10, sample Mean x¯=121.2 and Standard Deviation s =11.1. Then 95 % Confidence Interval for the population is

Choices

Choice (4) Response

a.

[126.67, 127.29]

b.

[113.27, 129.13]

c.

[127.3, 130.56]

d.

[127.29, 126.67]

Question number: 209

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

What is the 95 % Confidence Interval if n = 100, sample mean x¯=16 and population standard deviation σ=3

Choices

Choice (4) Response

a.

[2.39, 2.58]

b.

[15.41, 16.59]

c.

[3, 16]

d.

Question does not provide sufficient data or is vague

Question number: 210

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

A Electric company wants to estimate the amount of electric bills of the past month. He takes a random sample of 18 households and obtains the following amounts, (in Rs) for their past month electric bill. It is given that s=222.45

Samples from electric company

What are the readings of the family?

1608

1875

1264

1794

1478

1999

1828

2206

1798

1794

1738

1740

1598

1486

1830

1568

1941

1516

The 95 % confidence interval of the mean electric bill will be

Choices

Choice (4) Response

a.

[1798.92, 1828.30]

b.

[1614.92, 1836.30]

c.

[1608.56, 1836.30]

d.

[1478.92, 1999.30]

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