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Exercise 1: Use the sample data below to answer the following question(s). The paired data consist...

Exercise 1: Use the sample data below to answer the following question(s). The paired data consist of the cost of regionally advertising (in thousands of dollars) a certain pharmaceutical drug and the number of new prescriptions written (in thousands).

Cost 9 2 3 4 2 5 9 10
Number 85 52 55 68 67 86 83 73
  1. Find the value of the linear correlation coefficient r.
  2. Find the equation of the regression line, letting Number of Surgeries be the independent (x) variable.
  3. Find the coefficient of determination.
  4. Find the standard error of estimate se.
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