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Question 4:14 pts) A joumal article sample of sample variance of 2.268 was used as natural frequency (Hz) of delamin same sample data. The resulting intervals were (230.2, 233.07) and (229.11, 234.16) reports that a sample of size 5 with a sample mean of 231.634 and a a basis for calculating two confidence intervals for the true average ated beams of a certain type. Both intervals were calculated from the (a) Determine the confidence levels of the two intervals. You decide that a confidence level of975% s more appropriate than the levels used limits of the 97.5% interval?

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