Mathematics, 21.11.2019 02:31 jaylaa04
1/.1897rockwell hardness of pins of a certain type is known to have a mean of 50 and a standard deviation of 1.2 under regular conditions. without assuming population normality, what is the approximate probability that the sample mean hardness for a random sample of 40 pins is at least 51?
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1/.1897rockwell hardness of pins of a certain type is known to have a mean of 50 and a standard devi...
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