Question 58
A farmer keeps cattle in a field of grass.
The cattle leave dung in the field. Fungi grow on the dung. The farmer notices that the grass looks greener, and grows taller, when it grows next to cow dung.
The farmer measures the length of five grass leaves close to some cow dung, and another five grass leaves where there is no cow dung.
Here are her results.
Next to cow dung: 11 cm, 13 cm, 9 cm, 12 cm, 8 cm
No cow dung: 9 cm, 10 cm, 6 cm, 7 cm, 9 cm
Calculate the mean length of the grass leaves next to cow dung. Then calculate the mean length where there is no cow dung. Write the mean lengths in your results table.
The cattle leave dung in the field. Fungi grow on the dung. The farmer notices that the grass looks greener, and grows taller, when it grows next to cow dung.
The farmer measures the length of five grass leaves close to some cow dung, and another five grass leaves where there is no cow dung.
Here are her results.
Next to cow dung: 11 cm, 13 cm, 9 cm, 12 cm, 8 cm
No cow dung: 9 cm, 10 cm, 6 cm, 7 cm, 9 cm
Calculate the mean length of the grass leaves next to cow dung. Then calculate the mean length where there is no cow dung. Write the mean lengths in your results table.
