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7) Students in first-year statistics wrote a 100 point test where the grades were normally distributed....

7) Students in first-year statistics wrote a 100 point test where the grades were normally distributed. The mean was 60 and the standard deviation was 12. Students in first-year calculus also wrote a 100 point test where the grades were normally distributed. The mean was 68 and the standard deviation was 8.

A. Brianna has a mark of 81 in statistics and a mark of 83 in calculus. Which mark is “better” compared to her classmates?

B. The statistics professor has decided to bell curve the statistics class so that it has a mean of 65 and a standard deviation of 10. What would Brianna have in calculus now?  


Math   Statistics-And-Probability   
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