. The data below relate the thickness loss during calendaring of a viscose needle punched fabric and the load on the calendar bowl.

Load

(tons) (x) Thickness loss (%)(y)

0.5 4

1.0 13

1.5 14

2.0 20

2.5 24

3.0 23

Fit an equation of the form y=x to these data. Calculate 95% confidence limits for and for the thickness loss when load =2.3 tons.