Use the appropriate applet to construct a simulated null distribution using the MAD statistic. Mark the observed MAD statistic calculated in the previous question on this graph.

a. Paste a screenshot or draw your null distribution below with the observed MAD marked and the approximate p-value shaded in.

b. Is the observed statistic out in the tail of this null distribution or is it a fairly typical result?

c. What is the p-value from your simulation? Based on this simulation analysis, would you conclude that the experiment provides strong evidence against the null hypothesis and conclude that there is a genuine difference in at least one of the probabilities of not yielding for the five different status groups? Explain your reasoning.

The following table provides descriptive statistics on the 152 drivers:

Transcribed Image Text:

Status 4 5 3 Did yield 25 20 Didn't yield 8 6 20 20 5 13 28 Total 61 45 2.