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hello. please can you help me solve number 3 if you can thank you. probability that a random sample of will have sample mean tensile

hello. please can you help me solve number 3 if you can thank you.

probability that a random sample of will have sample mean tensile strength that is between 75.25 and 75.75 psi . 3) Consider the probability density function f ( x ) = 2 3 xe X/o DEX

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