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Unformatted text preview: 2. Move everything to one side: After  Before > 0. 3. Call the difference you have on the left side D: D = After  Before > 0. 4. Convert to proper notation: 5. Compute the new variable D and be sure to follow the order you have defined in step 3. Do not simply take the smaller away from the larger. From this point, you can think of having a new set of values. Technically, they are called D, but you can think of them as x. The original values from the two samples can be discarded. 6. Find the mean and standard deviation of the variable D. Use these as the values in the ttest from chapter 9....
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This note was uploaded on 01/26/2012 for the course MATH 1070 taught by Professor Akbas during the Spring '08 term at Georgia State University, Atlanta.
 Spring '08
 AKBAS
 Statistics

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