Question

The following are data of dry density of y = mortar and x = mortar air composition. Find the confidence interval for b1 at 95%.

X	Y
5.7	119
6.8	121.3
9.6	118.2
10	124
10.7	112.3
12.6	114.1
14.4	112.2
15	115.1
15.3	111.3
16.2	107.2
17.8	108.9
18.7	107.8
19.7	111
20.6	106.2
25.0	105.0

Answer 1

Detailed R code given for above calculations