4. a foresting service conducted a survey to see if tree farms that planted hardwood trees were more profitable over a 30-year period than tree farms that planted softwood trees. the results of this study showed that hardwood trees had a 46% higher profit per acre. are the results statistically significant?

a)yes, because the chance of getting a similar result is small.

b)no, because planting softwood trees have a higher profit per acre.

c)yes, because planting hardwood trees have a higher profit per acre.

d)no, because there is not enough information given to make a conclusion.