The miles per gallon (mpg) for each of 20 medium-sized cars selected from a production line during the month of March are listed below.

23.2	21.4	23.7	23.8
20.3	24.5	25.4	27.1
24.8	22.8	26.3	23.3
26.0	24.8	24.5	24.3
25.0	22.3	23.0	24.7

Answer c ONLY

(b) Find the median (in mpg). 24.4 mpg Find the upper quartile (in mpg). 24.9 mpg Find the lower quartile (in mpg). 23.1 mpg (c) Draw a box plot for the data and look for outliers. O 20 21 22 23 24 25 26 27 28 20 21 22 23 24 25 26 27 28 20 21 22 23 24 25 26 27 28 20 21 22 23 24 25 26 27 28 Does this conclusion agree with your results in part (a)? [HINT: Since the z-scores and the box plot are two unrelated methods for detecting outliers, and use different types of statistics, they do not necessarily have to (but usually do) produce the same results. ] O Yes, the conclusion agrees with the results in part (a). No, the conclusion does not agree with the results in part (a). Using the box plot identified a outlier while using the z-scores did not. O No, the conclusion does not agree with the results in part (a). Using the z-scores identified a outlier while using the box plot did not