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In: Statistics and Probability

A random sample of 18 novels has a standard deviation of 20 pages. A 95% confidence...

A random sample of 18 novels has a standard deviation of 20 pages. A 95% confidence interval for the standard deviation in the length of all novels is from _______ to _______ (round to the nearest tenth of a page, so one decimal place)

Expert Solution

A random sample of 18 novels has a standard deviation of 20 pages. A 95% confidence interval for the standard deviation in the length of all novels is from 15.0 to 30.0 (round to the nearest tenth of a page, so one decimal place)

Explanation:

n = 18

s = 20

= 0.05

df = 18 - 1 = 17

Confidence Interval:

Low End:

From Table:

= 30.191

Low End:

High End:

From Table:

= 7.5642

High End:

Confidence Interval:

15.0 < < 30.0

orchestra answered 2 years ago

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A random sample of 18 novels has a standard deviation of 20 pages. A 95% confidence...

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