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Mathematics, 31.07.2019 22:10 OliviaParis8837
Ascientist wishes to estimate the mean breaking strength of a certain type of steel rod within 3.0 psi with 95% confidence. based on experience with a similar type of steel, she believes the standard deviation is approximately 15.0 psi in individual breaking strengths. how many steel rods should she test?
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Ascientist wishes to estimate the mean breaking strength of a certain type of steel rod within 3.0 p...
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