Engineering, 19.12.2019 00:31 kaylatunell123

The burning rates of two different solid-fuel propellants used in aircrew escape systems are being studied. it is known that both propellants have approximately the same standard deviation of burning rate; that is, σ 1 = σ 2 = 3 cm/s. from a random sample of size n 1 = 20 and n 2 = 20 , we obtain x ¯ 1 = 18.02 cm/s and x ¯ 2 = 24.36 cm/s.

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The burning rates of two different solid-fuel propellants used in aircrew escape systems are being s...