
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:: Chapter 8 (Sections 8.4 through... i
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Use the sample information x = 36, o = 4, n 13 to calculate the following confidence intervals for u assuming the sample is from a
normal population.
(a) 90 percent confidence. (Round your answers to 4 decimal places.)
The 90% confidence interval is from
to
(b) 95 percent confidence. (Round your answers to 4 decimal places.)
The 95% confidence interval is from
to
(c) 99 percent confidence. (Round your answers to 4 decimal places.)
The 99% confidence interval is from
to
(d) Describe how the intervals change as you increase the confidence level.
The interval gets narrower as the confidence level increases.
The interval gets wider as the confidence level decreases.
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