3.More Regression:

The medical researcher decides to take a few more measurements to have a more complete data set. The following table represents the finalized data set detailing bacteria growth after 8 hours:

pH

Number of Bacteria (thousands)

3

124

4

116

5

120

6

131

7

136

8

141

9

151

10

148

11

163

12

155

With this data, calculate a new least-squares regression line. (your earlier work should help some)

What is the formula you found? How does this compare to your original least-squares regression line?