a company makes plant food. it experiments on 20 tomato plants, 10 that are given the plant food and 10 that are not, to see whether the plants are given the plant food grow more tomatos. the number of tomatos for each plant given the plant food are 5,9,3,10,12,6,7,2,15 and 10. the numbers of each tomatos for each plant not given the plant food are 3,5,4,16,7,5,14,10,6 use the data to support the argument that the plant food works.