Mathematics, 05.06.2020 12:57, michaellevingston46
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey
was done on 27 students, and the distribution of total study hours per week is bell-shaped with a mean of
12 hours and a standard deviation of 2.9 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: 2
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