Blank has a corresponding angle of angle 8.

Can somebody me out with this question

What term best describes a line ans a point that lie in the same plane

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?