(Solved): A normal population has mean \( \mu=31 \) and standard deviation \( \sigma=7 \). (a) What proportio ...

A normal population has mean \( \mu=31 \) and standard deviation \( \sigma=7 \). (a) What proportion of the population is between 15 and 25 ? (b) What is the probability that a randomly chosen value will be between 25 and 35 ? Round the answers to at least four decimal places. Part 1 of 2 The proportion of the population between 15 and 25 is Part 2 of 2 The probability that a randomly chosen value will be between 25 and 35 is