All of the following are equivalent to 3: 8=x: 32 except

8: 3 = 32: x
3: x = 8: 32
x: 8 = 3: 32
8: 32 = 3: x

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?

Need solving this second acceleration problem.

Which of the following is the true for f(x) = 5cos