ZOOM
ID:756 1884 6470
PASSCODE:46QBZX

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?

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?