Select all cases where there is a causal relationship.

1. There is a strong positive correlation between the number of touchdowns per football game and the final score of the football game.

2. The number of umbrellas sold is positively correlated to precipitation levels.

3.The number of stops a school bus makes on the morning route is negatively correlated with how many students ride a particular bus.

4.There is a strong negative correlation between the age and the number of toys purchased for one's birthday.

5. There is a moderate positive correlation between the amount of rice a family eats per month and the amount of oranges sold per month in the South of the U.S.

6. There is a strong positive correlation between the number of cigarettes consumed and the number of cases of lung cancer diagnoses.