An article in Geology gives the following equation relating pressure, P, and total aluminum content, AL, for

Question:

An article in Geology gives the following equation relating pressure, P, and total aluminum content, AL, for 12 Horn blende rims: P_ - 3.46(+ 0.24) + 4.23( + 0.13)AL The quantities shown in parentheses are standard errors for the y-intercept and slope estimate, respectively. Find a 95% confidence interval for the slope, b1.