An article in the Tappi Journal (March, 1986) presented data on green liquor Na 2 S concentration (in grams per liter) and paper machine production (in tons per day). The data (read from a graph) are...

An article in the
Tappi Journal
(March, 1986) presented data on green liquor Na₂S concentration (in grams per liter) and paper machine production (in tons per day). The data (read from a graph) are shown as follows:

on
y
= green liquor Na₂S concentration and
x
= production in a paper mill. Find a 99% confidence interval on each of the following:

(a) β₁

(b) β₀

(c) Mean Na₂S concentration when production
x
= 910 Tons/day

(d) Find a 99% prediction interval on Na₂S concentration when
x
= 910 tons/day.