Statistical Inference and Hypothesis Testing-Confidence Interval Estimation [ISS (Statistical Services) Statistics Paper II]: Questions 1 - 6 of 72

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Question 1

Question MCQ▾

It is given that , and . Then the 95% Confidence Interval for the population mean

Choices

Choice (4)Response

a.

18 ± 222.45

b.

1725.61 ± 110.69

c.

1725.61 ± 222.45

d.

1725.61 ± 897.36

Edit

Question 2

Question MCQ▾

The diameter of cylindrical rods is assumed to be normally distributed with a standard deviation of 0.91 cm. A sample of 25 rods has a mean diameter of 4.5 cm. 95% confidence limits for population mean are:

Choices

Choice (4)Response

a.

b.

c.

1.9±0.098

d.

All of the above

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Question 3

Question MCQ▾

As the level of confidence level decreases, the size of the corresponding interval will

Choices

Choice (4)Response

a.

Decrease

b.

Remains the same

c.

Increase

d.

All of the above

Edit

Question 4

Question MCQ▾

It is given that , , . then 90% Confidence Interval for is

Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

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Question 5

Question MCQ▾

is the Confidence intervals for when … and is the Confidence intervals for when …

Choices

Choice (4)Response

a.

and

b.

and

c.

and

d.

All of the above

Edit

Question 6

Question MCQ▾

A school wants to study the number of days the students will be absent from school per year. It surveys attendance of 10 children and the number of days the children is absent from schools are

What Are the Readings of the Family?
1213
911
78
49
58

Standard deviation . Then 95% Confidence interval on population mean is

Choices

Choice (4)Response

a.

8.6±2.05

b.

c.

6.55⩽μ⩽10.65

d.

All a., b. and c. are correct

Edit