An agricultural research team conducted a study to test the effect of a new fertilizer on a certain type of bean. A random sample of 12 beans, which grew on soil that had received the new fertilizer, yielded an average weight of 1.32 grams with a standard deviation of 0.48 grams. Other

Random sample of 18 beans, grown in soil where no fertilizer had been added, had a mean

of 1.10 grams and a standard deviation of 0.50 grams. Is it possible to affirm the effectiveness of the fertilizer? Use

a significance level of 5%. Indicate and test the necessary assumptions.