To increase egg production, a farmer decided to increase the amount of time the lights were on in a chicken pen. Nine hens were randomly selected, and the number of eggs produced was recorded. After a week of extended light, the same hens were monitored again. The data is below. At alpha = 0.05, can it be concluded that the increased light increased egg production? 

Before: 4, 3, 8, 7, 6, 4, 9, 7, 6 

After: 6, 5, 9, 7, 4, 5, 10, 6, 9