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Assume that the dictation speeds of students at the end of an advanced court reporting course...

Assume that the dictation speeds of students at the end of an advanced court reporting course are normally distributed with a mean of 100 words per minute and a standard deviation of 20 words per minute. Find the probability that a randomly selected student from the course can take dictation at a speed:

a. Of more than 120 words/min.

b. Between 90 and 110 words/min.

​​c. Of less than 80 words/min.

Math   Statistics-And-Probability   
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Standard normal table is used to obtain values

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