The value of agricultural exports and imports in the United states for 2006–2011 are given in Figure 4.162.  a. Letting x = the value of agricultural exports and y = the value of agricultural imports,...

The value of agricultural exports and imports in the

United states for 2006–2011 are given in Figure 4.162.

 a. Letting x = the value of agricultural exports and

y = the value of agricultural imports, plot the data. Do the data exhibit a linear trend?

 b. Find the line of best fit.

c. Predict the value of agricultural imports when the value of agricultural exports is 85.0 billion dollars.

d. Predict the value of agricultural exports when the value of agricultural imports is 75.0 billion dollars.

e. Find the coefficient of correlation.

 f. Are the predictions in parts (a) and (b) reliable? Why or why not?