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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, 22.06.2019 02:00
Angles 1 and 2 are complimentary angles. angle 1 = 52 degrees. what is the measure of angle 2?
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Mathematics, 22.06.2019 02:00
The product of 3 and a number increased by 8 is 31 written as an equation
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