A normal population has mean 39 and standard deviation o 10 a What proportion of the population is between 17 and 28 b What is the probability that a randomly chosen value will be between 35 and 45 Round the answers to at least four decimal places Part 1 of 2 The proportion of the population between 17 and 28 is Part 2 of 2 X The probability that a randomly chosen value will be between 35 and 45 is