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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?
Answers: 3
Mathematics, 21.06.2019 18:30
Complex numbers multiply β-4 * β-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).
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Mathematics, 21.06.2019 19:30
Which of the points a(6, 2), b(0, 0), c(3, 2), d(β12, 8), e(β12, β8) belong to the graph of direct variation y= 2/3 x?
Answers: 2
Mathematics, 21.06.2019 21:20
Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 β12 74 β74
Answers: 2
If cos a= .5410 and a is an angle between 0 and 90...
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