Gerald randolph earns a 3 percent commission on all sales. he also receives a $1,100 bonus if his commission exceeds $4,000. his total sales were $85,500. what was his total pay?

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?