Plz help I’ll mark brainliest:$

Do u just plot the numbers on the graph like (1,

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?

What properties allow transformation to be used as a problem solving tool