Question: 9.14. Table 9.16 in Exercise 9.39 shows countywidc data for several variables in Florida. For those counties. Table 9.9 shows part of the printout for

9.14. Table 9.16 in Exercise 9.39 shows countywidc data for several variables in Florida. For those counties. Table 9.9 shows part of the printout for the regression analysisrelatingy = median income

(thousand of dollars) to x = percent of residents with at least a high school education.

(a) Report the prediction equation, and interpret the slope.

(b) County A has 10% more of its residents than county B with at least a high school education. Find their difference in predicted median incomes.

(c) Find the correlation. Interpret using (i) the sign, (ii) the magnitude, (hi) the standardized slope.

(d) Find t 2

. Explain how to interpret it.

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