A professor at a local community college noted that the grades of his students were normally distributed with a mean of 74 and a standard deviation of 10. The professor has informed us that 7.5 percent of his students received A's while only 2.25 percent of his students failed the course and received F's.
a.
What is the minimum score needed to make an A?
b.
What is the maximum score among those who received an F?
c.
If there were 5 students who did not pass the course, how many students took the course?
What will be an ideal response?
?
| a. | 88.4 |
| b. | 53.95 |
| c. | 200 |
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