Question

In a 2012 Washington Post article entitled "Is College Too Easy? As Study Time Falls, Debate Rises," Daniel de Vise reports that "over the past half-century, the amount of time college students actually study, has dwindled from 24 hours a week to about 15... "No standard deviation is given, but let's assume that standard deviation is 2.5 hours.

1.) Suppose a college student is selected at random. Use the empirical rule to estimate how likely it is that this student studied between 10 and 17.5 hours per week.

2.) Suppose a college student is selected at random. Use the empirical rule to estimate how likely it is that this student studied between 17.5 and 20 hours per week.

3.) Suppose a college student is selected at random. Use the empirical rule to estimate how likely it is that this student studies more than 20 hours per week.

Answer 1