Two thousand students took an exam. The scores on the exam have an approximate normal distribution with a mean μ=84μ=84 points and standard deviation σ=14σ=14 points. Round your answers to one decimal place. (a) Calculate the first- and third-quartile scores for this exam. Q1=Q1=   points Q3=Q3=   points     (b) The middle 50%50% of the exam scores are between what two values? Enter your answers in increasing order. The middle 50%50% of the exam scores are between   points and   points.

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A: