The following data give the diffusion time (hours) of a silicon wafer used in manufacturing integrated circuits and the resulting sheet resistance of transfer:
![](https://test.transtutors.com/qimg/a2d16a35-0b7e-42c5-bef4-52e3e32b7dff.png)
(a) Find the equation of the least squares line fit to these data.
(b) Predict the sheet resistance when the diffusion time is 1.3 hours.