on ps above, pq = rs. what is the length of ps ?

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?

Choose the more precise measurement. 26.4 cm or 8.39 cm

Determine the solution for mc001-1.jpeg