4. Aircrew Escape Systems Are Powered By A Solid Propellant. The Burning Rate Of This Propellant Is An Important Product Characteristic. Specifications Require That Mean Burning Rate Must Be 50 Centimeters Per Second. The Experimenter Selects A Random Sam

匿名用户 最后更新于 2021-12-01 19:18 数学类Mathematics


4. Aircrew escape systems are powered by a solid propellant. The burning rate of this propellant is an important product characteristic. Specifications require that mean burning rate must be 50 centimeters per second. The experimenter selects a random sample of 25 propellants and obtains a sample average burning rate of 48.7 centimeters per second with standard deviation of 2 centimeters per second. What conclusion can be drawn from the samples?

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