The Average Pop Song Length in America Statistics Probability Analysis

Question Description

I don’t understand this Statistics question and need help to study.

Suppose that the average pop song length in America is 3.25 minutes with a standard deviation of 1.25 minutes. It is known that song length is not normally distributed. Suppose a sample of 36 songs is taken from the population. what is the approximate probability that the average song length will be greater than 4.25 minutes?