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Mathematics, 21.06.2019 16:50, gesic2003
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 21:30, camosloppy3150
Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?
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English, 26.06.2019 17:30
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