Question: We list for 11 medical devices, their cost (X, in hundreds of dollars) and their rating (Y, on a scale from 0-100). The results

We list for 11 medical devices, their cost (X, in hundreds of

We list for 11 medical devices, their cost (X, in hundreds of dollars) and their rating (Y, on a scale from 0-100). The results are X 4 5 2.5 2 4 2.85 2.1 2.5 2 1.8 1.3 Y 90 90 85 83 78 78 75 70 68 63 61 (a) Find the correlation coefficient? Interpret it in words. (b) Find the equation of the regression line. (e) Find the coefficient of determination (R- square). Explain what it represents? (d) Estimate the rating when x=2.7?

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