Suppose that only one replicate of the 2^4 design in Exercise 13.6 could be run and we could only conduct eight tests each day. Set up a design that would block out the day effect. Show specifically which runs would be made on each day.

Table 13E.3 is needed for the problem (Here it is typed out below) 

Treatment Combination I II

(1) 188 195

a 172 180

b 179 187

ab 185 178

c 175 180

ac 183 178

bc 190 180

abc 175 168

d 200 193

ad 170 178

bd 189 181

abd 183 188

cd 201 188

acd 181 173

bcd 189 182

abcd 178 182