Can you help me solve this probability problem

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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?

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.