I need help with this question:

Suppose that the dollar amount that you win in a game (could be negative)

is normally distributed with the mean of $30 and standard deviation

of $21.

Suppose that on any given day the percentage return on Apple stock is as follows: return 2 0 4 P(return) 0.6 0.1 0.3 Suppose that returns are independent from day to day. Compute the probability that the average return for the next 100 days Will exceed 0.2?I