Problem

Social Science: Immigration The percentage of immigrants in the United States has change...

Social Science: Immigration The percentage of immigrants in the United States has changed since World War I as shown in the following graph.

a. Number the bars with x-values 0–8 (so that x stands for decades since 1930) and use quadratic

regression to fit a parabola to the data. State the regression function. [Hint: See Example 10.]

b. Use your curve to estimate the percentage in 2016.

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Solutions For Problems in Chapter 1.3

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