The number of hours that students studied for final exams was normally distributed. Of the 200 students surveyed, the mean number of hours they studied was 12 hours. The standard deviation was 3 hours. A) Sketch the curve. B) What percent of students studied between 9 and 15 hours? C) What percent
The number of hours that students studied for final exams was normally distributed. Of the 200 students surveyed, the mean number of hours they studied was 12 hours. The standard deviation was 3 hours. A) Sketch the curve. B) What percent of students studied between 9 and 15 hours? C) What percent
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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The number of hours that students studied for final exams was normally distributed. Of the 200 students surveyed, the
A) Sketch the curve.
B) What percent of students studied between 9 and 15 hours?
C) What percent of students studied less than 9 hours?
D) What percent of students studied 3 hours or less?
E) What percent of students studied between 15 and 18 hours?
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