Answer Happy

1. (12 points) For the data set X = 56, 34, 32, 35, 21, 18, 44, 52, 45, 33, 34, 42, 51, 21, 24: (a) (4 points) Sketch the box and whisker plot for this data. (b) (4 points) What is the z-score of the value 18? Values with a z-score greater than 2 or less than -2 are considered unusual. Is 18 unusual? 2. (4 points) Which of the following histograms shows a data set with the greatest standard deviation? All three histograms are created from 1000 data values. 1.10 1.00 -10 10 80 B. 20 20 330 30 300 A. C. 3. (8 points) For each situation, sketch what you think the historgram of the population data should look like, and explain why you think it should be that way. (That is, if we collect the data for everyone in the population, and then create a histogram, what should it look like?) 230 200 1.50 100 -10 10 20 (a) (4 points) We collect data on the length of time (in days) that it takes people to recover from the flu. (b) (4 points) We collect data on the % body fat for 25 year old males.