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| 1) | There were 530 Algebra grades normally distributed with a mean of 63 and a standard devation of 12.1. We know that 14 students received a grade of A. What is the minimum score needed to recieve an A? By Easy Worksheet By Easy Worksheet By Easy Worksheet By Easy Worksheet |
2) | There were 570 Physics grades normally distributed with a mean of 75 and a standard devation of 12. We know that 13 students received a grade of A. What is the minimum score needed to recieve an A? |
| 3) | There were 510 Geometry grades normally distributed with a mean of 63 and a standard devation of 11.4. It is known that 208 students received grades of C or better. What was the minimum score of those who received a C? By Easy Worksheet By Easy Worksheet By Easy Worksheet By Easy Worksheet |
4) | There were 400 Geometry grades normally distributed with a mean of 60 and a standard devation of 11.3. It is known that 61 students received grades of B or better. What was the minimum score of those who received a B? |