Answer:
Week Crew Size Yards Installed
1 4 96
2 3 72
3 4 92
4 2 50
5 3 69
6 2 52
labor productivity = total output / number of employees
week 1 ⇒ 96 / 4 = 24 yards installed per worker
week 2 ⇒ 72 / 3 = 24 yards installed per worker
week 3 ⇒ 92 / 4 = 23 yards installed per worker
week 4 ⇒ 50 / 2 = 25 yards installed per worker
week 5 ⇒ 69 / 3 = 23 yards installed per worker
week 6 ⇒ 52 / 2 = 26 yards installed per worker
The crew size that results in the highest productivity is 2 workers per crew, and they install between 25-26 yards per worker.
The other crew sizes (3 or 4 workers) have a productivity of 23-24 yards per worker.