Mathematics, 24.09.2020 15:01 ChristLover2863
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey
was done on 20 students, and the distribution of total study hours per week is bell-shaped with a mean of
13 hours and a standard deviation of 2.5 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.
Answers: 1
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