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A professor at a local university noted that the grades of her students were normally distributed with a mean of 78 and a standard deviation
- A professor at a local university noted that the grades of her students were normally distributed with a mean of 78 and a standard deviation of 10.(12 Points)
- The professor has informed us that 16.6 percent of her students received grades of A. What is the minimum score needed to receive a grade of A?(4)
- If 12.1 percent of her students failed the course and received F's, what was the maximum score among those who received an F?(4)
- If 33 percent of the students received grades of B or better (i.e., A's and B's), what is the minimum score of those who received a B?(4)
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