Can someone help me with this?

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?

Which rule describes the composition of transformations that maps △abc to △a”b”c

Ineed here’s a picture of the question