On average a student types 100 words/minute midway through an advanced court-reporting course at the American Institute of Court Reporting. Assuming dictation speeds are distributed normally with a standard deviation of 20 words/min, what proportion of students can take dictation at the following speeds. At least 120 wpm At most 80 wpm

MATLAB: An Introduction with Applications
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On average a student types 100 words/minute midway through an advanced
court-reporting course at the American Institute of Court Reporting. Assuming dictation
speeds are distributed normally with a standard deviation of 20 words/min, what
proportion of students can take dictation at the following speeds.
At least 120 wpm
At most 80 wpm
Transcribed Image Text:On average a student types 100 words/minute midway through an advanced court-reporting course at the American Institute of Court Reporting. Assuming dictation speeds are distributed normally with a standard deviation of 20 words/min, what proportion of students can take dictation at the following speeds. At least 120 wpm At most 80 wpm
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