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a) 68% of the students spend between b) 95% of the students spend between c) 99.7% of the students spend between hours and hours and hours and hours on Statistics each week. hours on Statistics each week. hours on Statistics each week.

a) 68% of the students spend between b) 95% of the students spend between c) 99.7% of the students spend between hours and hours and hours and hours on Statistics each week. hours on Statistics each week. hours on Statistics each week.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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 21 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 3.2 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between b) 95% of the students spend between c) 99.7% of the students spend betv een hours and hours and hours and hours on Statistics each week. hours on Statistics each week. hours on Statistics each week.
Transcribed Image Text:For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 21 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 3.2 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between b) 95% of the students spend between c) 99.7% of the students spend betv een hours and hours and hours and hours on Statistics each week. hours on Statistics each week. hours on Statistics each week.
Expert Solution
Step 1

Given that 

X ~ Normal (Mean = M = 13 , Standard deviation = SD = 3.2)

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