final.f00

# final.f00 - Final exam St 512-R Fall 2000 Question I(8 pts...

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Sheet1 Page 1 Final exam, St 512-R Fall 2000 Question I (8 pts.) Here is a table of treatment means from a 3x3 factorial treatment arrangement. 10 18 22 __ 30 __ __ __ 28 If possible, fill in the blanks in such a way that the sum of squares for interaction is 0. Question II. I want to test two types of ear plugs (cotton and rubber) to see how they affect temorary hearing loss. I have 4 volunteers. I place one type of ear plug in the left ear and the other type in the right ear of each volunteer, assigning left and right at random for each volunteer. Each volunteer is then exposed to a noisy factory environment. Two of them will be exposed for one hour and the other two for two hours. The assigment of exposure time to volunteers and the order they are tested is completely randomized. Here are the data with the numbers under Cotton and Rubber representing the response Y for each type of ear plug. Volunteer Hours Cotton Rubber 1 1 8 6 2 1 9 11 3 2 10 14 4 2 12 13 (8 pts.) Lay out the source and degrees of freedom columns for the analysis of variance table in this experiment (10 pts.) Compute the numerator_______ and denominator ________ mean squares for the F test for testing that there is no effect of exposure time. Question III

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final.f00 - Final exam St 512-R Fall 2000 Question I(8 pts...

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