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Use linear regression to construct a predictive model for demand for ironing board covers based on sales of irons.

Year--------Sales of Irons (000)----Demand for Covers (000)
1---------------8-------------------------------5
2---------------7-------------------------------2
3--------------- 10------------------------------- 6
4--------------- 6------------------------------- 4

A) Develop the equation.
B) Determine the coefficient of correlation for this data?

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