Maragret

Norma finds her mean number of minutes per call to be 27, with a standard deviation of 6 minutes. The minutes per call are approximately normally distributed around 27 with no outliers.

Tasha collected another set of data values, and used a calculator for the engine speed and horsepower data. She got an equation for the least-squares line: ŷ = 10 + 30x. If Tasha uses this equation to predict horsepower from engine speed, the horsepower a...