A variable is normally distributed with mean 68 and standard deviation 10. Find the percentage of all possible values of the variable that a. lie between 73 and 80. b. are at least 75. c. are at most 90

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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A variable is normally distributed with mean 68 and standard deviation 10. Find the percentage of all possible values of the variable that

a. lie between 73 and 80.

b. are at least 75.

c. are at most 90

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