The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per
Question:
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) Draw a normal model that describes the reading speed of sixth-grade students.
(b)Find and interpret the probability that a randomly selected sixth-grade student reads less than 100 words per minute.
(c)Find and interpret the probability that a randomly selected sixth-grade student reads more than 140 words per minute.
(d)Find and interpret the probability that a randomly selected sixth-grade student reads between 110 and 130 words per minute. 0.3189
(e)Would it be unusual for a sixth grader to read more than 200 words per minute? Why?
Step by Step Answer:
Statistics Informed Decisions Using Data
ISBN: 9780134133539
5th Edition
Authors: Michael Sullivan III