Statistical Inference and Hypothesis Testing-Confidence Interval Estimation (ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern)): Questions 59 - 60 of 73

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Question number: 59

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

According to a water supply company, the mean water bill per year in 2010 is 1500 Rs. And he wants to estimate the amount of water bill per year in 2016. He takes a random sample of 18 households and obtains the following amounts, (in Rs) for the year 2016 of water bill. It is given that Equation

Samples from water 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

how can you interpret the answer if you compute 95 % confidence interval of the mean water bill?

Choices

Choice (4) Response

a.

It appears that the mean annual water bill has increased from 2010 to 2016

b.

It appears that there is no change in the mean annual water bill from 2010 to 2016

c.

It appears that the mean annual water bill has decreased from 2010 to 2016

d.

All of the above

Question number: 60

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

Let Equation be a random sample and Equation and Equation be any two statistics such that Equation , then the confidence limits for a parametric function Equation of Equation can be obtained by the relation

Choices

Choice (4) Response

a.

Equation and Equation

b.

Equation and Equation

c.

Equation and Equation

d.

Question does not provide sufficient data or is vague

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