Mathematics, 20.09.2020 09:01 imelda249
Preventing fatigue crack propagation in aircraft structures is an important element of aircraft safety. An engineering study to investigate fatigue crack in n equals 9 cyclically loaded wing boxes reported the following crack lengths (in mm): 2.09, 2.96, 3.04, 1.80, 1.20, 1.36, 2.02, 2.51, 2.57. Calculate the sample mean and sample standard deviation. Round your answers to 4 decimal places.
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