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The National Math and Science Initiative (NMSI) has recently begun a controversial program in which high school students are paid cash incentives for passing an end-of-year standardized test. Suppose we conduct a similar study. in which end-of-year test scores (y) are measured on a scale of 0-100 and the amount of the cash incentive offered to the student (x) is measured in dollars from $0 to $500. The regression equation is: Score = 67.51 +0.0148 × Cash.
The coefficient 0.0148 in the equation is
a. our estimate of the parameter beta0
b. the parameter betaO
c. our estimate of the parameter beta1
d. the parameter beta1


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