IOE
IOE265HW1

# IOE265HW1 - IOE 265 W2007 HW#1 solutions Due Mon Jan 22 at...

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IOE 265 W2007 HW #1 solutions Due: Mon Jan 22 at 9:00 AM (beginning of lecture) Please include your name, UM ID and lab section time in your written homework assignment. The assignment is worth 10 points. You may work with other students to discuss problem approaches and check answers, but you may not copy another’s work or refer to solutions from the Instructor’s manual or solutions from previous semesters. Please be sure to staple your assignment if it includes multiple pages. All problems are from the Devore text, 6 th edition. 1. (1 point) p. 11, problem #9. a. There could be several explanations for the variability of the measurements. Among them could be measuring error, (due to mechanical or technical changes across measurements), recording error, differences in weather conditions at time of measurements, etc. b. This could be called an analytic study because there is no sampling frame. 2. (2 points) p. 26, problem #26. a. (1 point) Since the bin widths are unequal, you should use a density histogram or groups together the bins of width .05 into bins of width 0.1, so that the bin widths are all .1 (-.5 if not).

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