I don't get what they mean by "Coach Green could possibly have 7,9, or 12 players on her team." It definitely not 12 I think but I really don't get it

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 not true about kl and mn? what is mn? (show your work)

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?