The professor has informed us that 7.93 percent of her, Ask an Expert

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A professor at a local university noted that the grades of her students were normally distributed with a mean of 73 and a standard deviation of 11.

1. The professor has informed us that 7.93 percent of her students received grades of A What is the minimum score needed to receive a grade of A?

2. Students who made 57.93 or lower on the exam failed the course. What percent of students failed the course?

3. If 69.5 percent of the students received grades of C or better, what is the minimum score of those who received C's?

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