STAT 200 Lecture Notes - Lecture 11: Sample Size Determination, Confidence Interval, Statistical Parameter
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Population mean of paired differences mu d. Difference in two population means for independent samples mu1. Example: what is the fastest speed that you have ever driven. Explanatory variable ( variation explained between): gender. Only because sample size is the same. Pooled - normal distribution but shape is difference so s. d. is difficult to calculate. Example 1a: standard error of sampling distribution. (mean x1-mean x2) plus or minus t x s. e. ( mean x1-mean x2) Interpret: we are 95% confident that the difference in the.
