The data below are the temperatures on randomly chosen days during a summer class and the number of absences on those days. Construct a 95% confidence interval about the slope of the true least-squares regression line, for the data below, given that y = 0.449x - 30.27.
Temp (x) 72 85 91 90 88 98 75 100 80
Number of 3 7 10 10 8 15 4 15 5
Absences (y)
A. (0.367, 0.530)
B. (-1.760, 2.658)
C. (0.385, 0.513)
D. (0.371, 0.527)
Please show the right answer from the above choices.