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For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 25 students, and the distribution of total study hours per week is bell-shaped with a mean of 12 hours and a standard deviation of 3.3 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between  hours and  hours on Statistics each week. b) 95% of the students spend between  hours and  hours on Statistics each week. c) 99.7% of the students spend between  hours and  hours on Statistics each week.

For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 25 students, and the distribution of total study hours per week is bell-shaped with a mean of 12 hours and a standard deviation of 3.3 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between  hours and  hours on Statistics each week. b) 95% of the students spend between  hours and  hours on Statistics each week. c) 99.7% of the students spend between  hours and  hours on Statistics each week.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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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For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 25 students, and the distribution of total study hours per week is bell-shaped with a mean of 12 hours and a standard deviation of 3.3 hours.

Use the Empirical Rule to answer the following questions.

a) 68% of the students spend between  hours and  hours on Statistics each week.

b) 95% of the students spend between  hours and  hours on Statistics each week.

c) 99.7% of the students spend between  hours and  hours on Statistics each week.

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