normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes
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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Question
23. The time needed to complete a final examination in a particular college course is
distributed
following questions.
a. W hat is the probability of completing the exam in one hour or less?
b. W hat is the probability that a student will complete the exam in more than 60 minutes
but less than 75 minutes?
c. Assume that the class has 60 students and that the examination period is 90 minutes
in length. How many students do you expect will be unable to complete the exam in
the allotted time?
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