8-76. Consider the natural frequency of beams described in Exercise 8-34. Compute a 90% prediction interval on the diam- eter of the natural frequency of the next beam of this type that will be tested. Compare the length of the prediction interval with the length of the 90% CI on the population mean.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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8-34. An article in the Journal of Composite Materials
(December 1989, Vol. 23, p. 1200) describes the effect of
delamination on the natural frequency of beams made from
composite laminates. Five such delaminated beams were
subjected to loads, and the resulting frequencies (in hertz) were
as follows:
230.66, 233.05, 232.58, 229.48, 232.58
Transcribed Image Text:8-34. An article in the Journal of Composite Materials (December 1989, Vol. 23, p. 1200) describes the effect of delamination on the natural frequency of beams made from composite laminates. Five such delaminated beams were subjected to loads, and the resulting frequencies (in hertz) were as follows: 230.66, 233.05, 232.58, 229.48, 232.58
8-76. Consider the natural frequency of beams described in
Exercise 8-34. Compute a 90% prediction interval on the diam-
eter of the natural frequency of the next beam of this type that
will be tested. Compare the length of the prediction interval
with the length of the 90% CI on the population mean.
Transcribed Image Text:8-76. Consider the natural frequency of beams described in Exercise 8-34. Compute a 90% prediction interval on the diam- eter of the natural frequency of the next beam of this type that will be tested. Compare the length of the prediction interval with the length of the 90% CI on the population mean.
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