Mathematics, 20.07.2019 01:30 tommyaberman

Life tests on a helicopter rotor bearing give a population mean value of 2500 hours and a population standard deviation of 135 hours. ithe population is normally distributed. if the specification requires that the bearing lasts at least 2100 hours, what percent of the parts are expected to fail before the 2100 hours? . list your answer as a percentage to 2 decimal places without the % sign (x. xx)

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