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The economic teacher believes that the average quiz score is a good way to find out the final exam score. A random sample of 10

The economic teacher believes that the average quiz score is a good way to find out the final exam score. A random sample of 10 students produced the following data where x is the average quiz score and y is the final exam score.

x 73 93 45 65 100 40 85 70 75 85

y 70 96 50 70 94 38 83 65 77 87

(a) Find an equation of the least squares regression line. Show all work; writing the correct equation,

(b) Based on the equation from part (a), what is the predicted final exam score if the average quiz score is 80? Show all work and explain your answer.

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