# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 232 - 235 of 253

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## Question number: 232

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MCQ▾

### Question

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

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Choice (4) Response

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## Question number: 233

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### Question

What is the 95 % Confidence Interval if n = 100, sample mean and population standard deviation

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Choice (4) Response

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All of the above

## Question number: 234

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### 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

 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

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Choice (4) Response

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d.

## Question number: 235

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### Question

If is the sample mean of a random sample of size ( > 30) from a Normal population with known variance, a Confidence Interval (CI) on is given by

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Choice (4) Response

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Question does not provide sufficient data or is vague

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