ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 156 - 159 of 253

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Question number: 156

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

A fan manufacturing company needs to know the average amount of time it takes to install a fan. A technique installs it in 64 different houses and the average time of installation is 42 minutes. The calculated standard deviation is 5 minutes. Then 95 % confidence interval foethe mean installation time is

Choices

Choice (4) Response

a.

b.

c.

42 + 1.225

d.

Both a. and b. are correct

Question number: 157

» Statistical Inference and Hypothesis Testing » Minimum Variance Unbiased Estimators

MCQ▾

Question

Suppose are the unbiased estimators of with Efficiencies and respectively. and is the correlation coefficient between them. Then

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 158

» Statistical Inference and Hypothesis Testing » Simple and Composite Hypotheses

MCQ▾

Question

The hypothesis is known as

Choices

Choice (4) Response

a.

The hypothesis is known as Composite Hypothesis

b.

Simple Hypothesis

c.

Null Hypothesis

d.

Alternative Hypothesis

Question number: 159

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

The Indian Government wants the information of children per family. It takes a random sample of 40 families and the numbers of children in the selected families are

Readings of the random sample by Indian Government

What are the readings of the family?

1

2

1

2

1

1

1

1

5

4

3

4

1

0

1

2

1

0

3

0

0

0

2

2

5

3

1

0

8

1

0

1

2

1

1

5

2

1

2

3

Calculated standard deviation is σ =1.95. Obtain the 90 % confidence interval for the mean number of children per family in India

Choices

Choice (4) Response

a.

b.

c.

d.

f Page