Find a 95% confidence interval estimate of the slope for the calculus grade data in Table 12.1.

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TABLE 12.1 Mathematics Achievement Test Scores and Final Calculus Grade for Grade 12 Students from High School Mathematics Achievement Final Calculus Student 1 Test Score Grade 39 65 10 23456789O 43 78 21 52 64 82 57 92 47 89 28 73 75 98 34 56 52 75