8. An agricultural researcher wanted to test the effectiveness of two types of fertilizers. She compared the output of two samples of tomato plants- one sample used Fertilizer A, the other used Fertilizer B. Fertilizer A x = 85 lbs. s = 5 lbs. n = 40 Fertilizer B x = 78 lbs. s = 6 lbs. n = 36 Perform a hypothesis test at 95% confidence to determine if the two fertilizers are equally effective. To get full credit you must do the following: - State your null and alternate hypotheses. - Show either the test statistic and p-value OR the confidence interval. - State whether you reject the null hypothesis. - Answer the question: could the two population means be equal? YES or NO