Currently struggling on a lecture problem, we are coding in R, explain throughly if possible, thank you!

Suppose a fair dice (six-sided) is thrown 100 times in a row. What is the probability that the average of all the numbers is between 3.4 and 3.6? Let A y denote the average of the first 100 throws. Find a way to simulate the Ay, and generate 10* samples. Determine how often these samples fall inside the interval (3.4,3.6)