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The following data represent x 5 boat sales and y = boat trailer sales from 1995 through 2000. Source: Bureau of the Census, Statistical Abstract of the United States 1999, p. 269 and Statistical Abstract 2002, p. 755.

Year	Boat Sales (Thousands)	Boat Trailer Sales (Thousands)
1995	649	207
1996	619	194
1997	596	181
1998	576	174
1999	585	168
2000	574	159

a. Determine the least-squares regression line and inter- pret its slope.

b. Estimate, for a year during which 500,000 boats are sold, the number of boat trailers that would be sold.

c. What reasons might explain why the number of boat trailers sold per year is less than the number of boats sold per year?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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