Two thousand students took an exam. The scores on the exam have an approximate normal distribution with a mean u = 74 points and standard deviation o = 13 points. Round your answers to one decimal...

Extracted text: Two thousand students took an exam. The scores on the exam have an approximate normal distribution with a mean u = 74 points and standard deviation o = 13 points. Round your answers to one decimal place. (a) Calculate the first- and third-quartile scores for this exam. Q1 = Number points Q3 points = Number (b) The middle 50% of the exam scores are between what two values? Enter your answers in increasing order. The middle 50% of the exam scores are between Number points and Number points.