1) A journal article reports that a sample of size 5 was used as a basis for calculating at 95% CI for the true average natural frequency (Hz) of delaminated beams of a certain type. The resulting interval was (229.764, 233.504). Assume the population is normal. You decide that a confidence level of 99% would be more appropriate than a 95% level used. What are the limits of the 99% interval?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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     11)   A journal article reports that a sample of size 5 was used as a basis for calculating at 95% CI for the true average natural frequency (Hz) of delaminated beams of a certain type. The resulting interval was (229.764, 233.504). Assume the population is normal.  You decide that a confidence level of 99% would be more appropriate than a 95% level used. What are the limits of the 99% interval? 

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