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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, 21.06.2019 22:00
Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).
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Mathematics, 21.06.2019 22:10
What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²
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Mathematics, 21.06.2019 23:00
Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.
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