.    The reading speed of sixth-grade students is approximately normal. With a mean speed of 125 books per minute and a standard deviation of 24 books per minute.   a.     What is the probability that a sixth grader reads less than 111 books per minute?   b.     What is the probability that a sixth grader reads less than 156 books per minute   c.     What is the probability that a sixth grader reads more than 134 books per minute?   d.     What is the probability that a sixth grader reads between than 110 books per minute and 140 books per minute?   e.     What reading rates separate the middle 88% of all sixth-grade students?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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2.    The reading speed of sixth-grade students is approximately normal. With a mean speed of 125 books per minute and a standard deviation of 24 books per minute.

 

a.     What is the probability that a sixth grader reads less than 111 books per minute?

 

b.     What is the probability that a sixth grader reads less than 156 books per minute

 

c.     What is the probability that a sixth grader reads more than 134 books per minute?

 

d.     What is the probability that a sixth grader reads between than 110 books per minute and 140 books per minute?

 

e.     What reading rates separate the middle 88% of all sixth-grade students?

 

 

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