Question 4 2 pts An advertisement makes the claim: " Lighter shoes make you run faster." 0f the following, which is the best way to investigate this claim? 0 Choose the records of the top twenty runners who are wearing the lighter shoes and compare their times to run 400 meters before and after they began wearing the shoes. 0 Choose twenty runners and select ten at random to wear lighter shoes and have the other ten wear heavier shoes to run 400 meters and compare their times. 0 Choose twenty runners at random and have the women wear the lighter shoes and the men wearthe heavier shoes to run 400 meters and compare their times. O Choose to obse rye the results of 400-meter races for the next year and see how many winners are wearing the lighter shoes Question 5 2 pts If the shape of our distribution is skewed left, which of the following is/are true? 0 The mean is less than the median 0 That's one funky looking graph 0 The mean is more than the median O The mean is approximately equal to the median. Question 6 2 pts If we have a uniform distribution, which of the following is/are true? 0 The mean is approximately equal to the median. O The mean is less than the median O The mean is more than the median Q Why is a graph wearing a school uniform