Find the value of x in the figure below if GH is parallel to JK. A. 5 units
B. 9.8 units
C. 6.7 units
D. 4 units

Which of the following expressions are equivalent ?

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?

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1