Posted by Mo on Monday, May 30, 2011 at 11:10pm.
if 25% of all students asked say they spend too much time on homework, and 12 students are selected at random, what is the expected number of students who say they spend too much time on homework?

Statistics  Ms. Sue, Monday, May 30, 2011 at 11:16pm
0.25 * 12 = ?
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