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Unformatted text preview: STA 6126 – HW#2 – Due October 21 Comparison of Two Populations 1. Data set HOT DOG contains samples of Beef and Poultry based hot dogs and their Calorie and Sodium contents. Use the independent sample t-test to test whether the true population means differ for each dependent variable seperately. In SPSS, you will need to import the data into the program (see instructions from HW#1, this one is easier), then select ANALYZE COMPARE MEANS INDEPENDENT-SAMPLES t-TEST . Your TEST VARIABLE is the dependent variable, and your GROUPING VARIABLE is the independent variable (you must specify its levels). Clearly state all elements of your tests (use α =0.05) and include your SPSS output as well. 2. Data set ANTIPERSPIRANT contains experimental data from a comparison of the efficacy of a DRY POWDER formulation with a POWDER-IN-OIL formulation. The data set contains three columns: SUBJECT # , DRY POWDER SCORE , and POWDER-IN-OIL SCORE . These were obtained during the test period, higher scores reflect more disagreeable odor. Use the paired t-test to test whether true the test period, higher scores reflect more disagreeable odor....
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- Spring '08
- Statistics, #, $750, $0, Student's t-test, $240