Inspecting Meat Is a Very Important Part of the Process

Essay

Inspecting meat is a very important part of the process of ensuring healthy food. So
that meat inspectors do not fall into a pattern of inspection, they use a 4-sided die to
decide whether or not to sample the meat from a particular "side" of beef. The meat
inspector rolls the die and if it comes up a 4, a sample is taken of that meat. Define
random variable x number of samples inspected in a meat locker with 30 sides of
beef.
a) What is the mean of the random variable x?
b) What is the standard deviation of the random variable x?