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On average, a student takes 110 words/minute midway through an advanced court reporting course at the...

On average, a student takes 110 words/minute midway through an advanced court reporting course at the American Institute of Court Reporting. Assuming that the dictation speeds of the students are normally distributed and that the standard deviation is 20 words/minute, find the probability that a student randomly selected from the course can take dictation at the following speeds. (Round your answers to four decimal places.) (a) more than 150 words/minute Incorrect: Your answer is incorrect. (b) between 90 and 150 words/minute (c) less than 90 words/minute

math   Statistics-And-Probability   
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