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

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 246 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

## 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

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

### Choices

Choice (4) Response

a.

and

b.

and

c.

and

d.

Question does not provide sufficient data or is vague

f Page