A large number of students took a departmental math test, of whom 8 percent scored 90 or more from the...
r.r.c-z9d4| A large number of students took a departmental math test, of whom 8 percent scored 90 or more from the scale of 100. The scores have a bell-shaped distribution with a standard deviation of 8.5. | |||||||||
| 17 | If the minimum score to pass the test is 62, what fraction of the students failed the test? | ||||||||
| a | 0.0526 | ||||||||
| b | 0.0409 | ||||||||
| c | 0.0301 | ||||||||
| d | 0.0262 | ||||||||
| 18 | The middle interval which includes 95% of the test scores is _______ to _______. (Round the scores to the nearest integer.) | ||||||||
| a | 60 | 96 | |||||||
| b | 61 | 95 | |||||||
| c | 63 | 93 | |||||||
| d | 64 | 94 | |||||||
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