Mathematics, 01.04.2021 21:00 steward92

1. (4 pts) A synthesis fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 80 psi and standard deviation 4 psi. Find the probability that a random sample of 9 fiber specimens will have sample mean tensile strength of at most 78 psi.

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1. (4 pts) A synthesis fiber used in manufacturing carpet has tensile strength that is normally dist...

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