Question: In order of increase egg production, a farmer decided to increase the amount of time the lights in his hen house were on. Ten hens were selected, and the number of eggs each produced was recorded. After one week of lengthened light time, the same hens were monitored again. The data are given here. At a = 0.05, can it be concluded that the increased light time increased egg production?

Hen 1 2 3 4 5 6 7 8 9 10

Before 4 3 8 7 6 4 9 7 6 5

After 6 5 9 7 4 5 10 6 9 6