The tank and aircraft productions in Germany and the United States during World War II are shown in Table 29.

Let T be a country€™s annual tank production, and let A be the country€™s annual aircraft production. Treat T as the explanatory variable and A as the response variable.
a. Construct a scatterplot that describes the association between tank and aircraft productions in Germany. Do the same for the United States. Show both scatterplots in the same coordinate system if you know how to use colors or shapes to identify which points are for which country.
b. Is there a linear association, a nonlinear association, or no association between tank and aircraft production in Germany? How about the United States?
c. For the Germany association, computer. On the basis of the scatterplot and the value of r, determine the strength of the32. Germany association. Do the same for the United States.
d. For a given tank production, which country tended to pro- duce more aircraft, Germany or the United States?

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Table 29 Tank and Aircraft Productions in Germany and the United States Production Year Country Tanks Aircraft 1939 940 1941 1942 1943 1944 1945 1939 940 1941 1942 1943 1944 1945 Germany Germany Germany Germany Germany Germany Germany United States United States United States United States United States United States United States 247 1643 3790 6180 12,063 19,002 3932 8295 10,862 12,401 15,409 24,807 40,593 7540 2141 6068 19,433 7836 85,898 96,318 46,001 31 4052 24,997 29.497 17565 11,968