According to the graph what is the value of the constant in the equation below A.10 B.5 C.75 D.100

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?

Which of the functions graphed below has a removable discontinuity?

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