Find an equivalent mixed number for the decimal number 0.45

45/10
4 1/2
9/20
5/10

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

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?

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?