At the end of their final exam, 550 students answered an additional question in which they...
At the end of their final exam, 550 students answered an additional question in which they rated their instructor's teaching effectiveness, with the following results.
|
Student's Rating of Instructor |
|||||||
|
Student's Final Grade |
Very or Somewhat Effective |
Very or Somewhat Ineffective |
|||||
|
A |
190 |
85 |
|||||
|
B |
75 |
120 |
|||||
|
C |
20 |
17 |
|||||
|
D |
9 |
18 |
|||||
|
F |
1 |
15 |
|||||
What proportion of the students who rated their instructor as very or somewhat effective received a B or better in the class?
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At the end of their final exam, 550 students answered an
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