Mathematics, 18.12.2019 20:31 abigailweeks10
An article in the journal of composite materials (vol 23, 1989, 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 were as follows (in hz):
230.66, 233.05, 232.58, 229.48, 232.58
(a) find a 90% two-sided ci on mean natural frequency. round your answers to 2 decimal places..
(b) do the results of your calculations support the claim that mean natural frequency is 235 hz?
Answers: 2
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An article in the journal of composite materials (vol 23, 1989, p. 1200) describes the effect of del...
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