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Mathematics, 21.06.2019 16:50
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?
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Mathematics, 21.06.2019 22:30
The track team ran a mile and a quarter during their practice how many kilometers did her team runs?
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Mathematics, 21.06.2019 22:40
Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x
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