Two thousand students took an exam. The scores on the exam have an approximate normal distribution with a mean μ=79μ=79 points and standard deviation σ=15σ=15 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.

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Two thousand students took an exam. The scores on the exam have an approximate normal distribution with a mean μ=79μ=79 points and standard deviation σ=15σ=15 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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