2.62 Fuel Tank Capacity. Consumer Reports provides infor mation on new automobile models, including price, mileage rat ings, engine size, body size, and indicators of features. A simple random sample...

2.62 Fuel Tank Capacity. Consumer Reports provides infor mation on new automobile models, including price, mileage rat ings, engine size, body size, and indicators of features. A simple random sample of 35 new models yielded the following data on fuel tank capacity, in gallons. Use cutpoint grouping with 12 as the first cutpoint and classes of equal width 2.
17.2
23.1
17.5
15.7
19.8
15.3
18.5
18.5
25.5
18.0
17.5
14.5
20.0
19.3
17.0
20.0
24.0
26.0
18.1
21.0
20.0
20.0
12.5
13.2
26.4
15.9
14.5
22.2
21.1
14.4
25.0
16.9
16.9
16.4
23.0