Imagine doing the following calculation: Compute the probability that the sample mean is greater than 5 ft 9 inches assuming that our hypothesis is in fact ... ... <看更多>

Power Calculations. Introduction ... If the p-value is 0.05, it will happen 1 out of 20 times. ... Statistical theory gives us formulas to calculate power. ... <看更多>

You probably want to use the cumulative distribution function pt . t <- 1.257 df <- 49 2 * (1 - pt(q = abs(t), df = df)) [1] 0.2147125. ... <看更多>