Referring to the previous exercise, describe how you would construct a null distribution for this situation by hand using the slope of the regression line as your statistic. Assume you have 20 slips of paper.

Data from previous exercise

Suppose a sample of 10 people had their foot lengths (cm) and heights (inches) measured. The results, along with the regression line, are shown in the scatterplot below. The equation of the regression line, correlation coefficient, and r² are also shown. Which one of the applet screenshots of null distributions for Exercise 10.4.2 displays the appropriate way to test whether there is a positive relationship between people€™s foot length and height?

Transcribed Image Text:

78 72 - 66 60 54 - 20 24 28 32 36 Footlength Height