Plis help me
Answer
A) 50
B)34
C)28
D) -12

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 is the x-intercept and y-intercept of the equation 2x+1. 2o

Can someone me with this? i’m not sure what to put for my equations.