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<p><a href=“http://econ.ucsb.edu/~babcock/College_time_use_NBER.pdf[/url]”>http://econ.ucsb.edu/~babcock/College_time_use_NBER.pdf</a> (table 6) indicates that, in 2003, engineering students average 18.6 hours of study time per week. Assuming 15 to 21 hours of class time per week (15 in a no-lab semester, 18 in a one-lab semester, 21 in a two-lab semester), that comes out to be 33.6 to 39.6 hours total spent on classes per week, which is less than the 40 hour week in the work force, and far less than the 80+ hour weeks described for investment bankers.</p>