The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per

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The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute and a standard deviation of 24 words per minute.

(a) What is the probability that a randomly selected sixth-grade student reads less than 100 words per minute?

(b) What is the probability that a randomly selected sixth-grade student reads more than 140 words per minute

(d) Would it be unusual for a sixth-grader to read more than 200 words per minute? Why?

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Fundamentals Of Statistics

ISBN: 9780321844606

4th Edition

Authors: Michael Sullivan III

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Question Posted: Apr 27, 2015 01:52 PM

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The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per

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a z x 100 12524 104 From Table V the area to the left of z 104 is 01492 so ...View the full answer

Fundamentals Of Statistics

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