Mathematics, 16.04.2020 00:39 ukyflyfl
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.3. (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 12 pins is at least 51?
Answers: 2
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Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard devia...
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