A coffee machine dispenses normally distributed amounts of coffee with a mean of 12 ounces and a standard deviation of 0.2 ounces. If a sample of 9 cups is selected, find the probability that the mean of the sample will be less than 12.1 ounces.

answer:

this change of direction is called refraction. when light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line. the amount of bending depends on two things: change in speed – if a substance causes the light to speed up or slow down more, it will refract (bend) more.

step-by-step explanation: