Used cars, cheap! A used-car salesman has 28 cars in his inventory, with prices ranging from $11,500 to $25,000. For a Labor Day sale, he reduces the price of each car by $500. What effect will this reduction have on each of the follow- ing characteristics of the resulting distribution of price? (a) Shape (b) Mean and median (c) Standard deviation and interquartile range (IQR)

On a certain portion of an experiment, a statistical test result yielded a p-value of 0.18. what can you conclude? 2(0.18) = 0.36 < 0.5; the test is not statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 18% of the time, so the test is not statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 82% of the time, so the test is not statistically significant. 0.18 > 0.05; the test is statistically significant. p = 1 - 0.18 = 0.82 > 0.05; the test is statistically significant.