TB MC Ou. 10-52 (Algo) A farmer uses a lot of... A farmer uses a lot of fertilizer to grow his crops. The farmer's manager thinks fertilizer products from distributor A contain more of the nitrogen that his plants need than distributor B's fertilizer does. He takes two independent samples of four batches of fertilizer from each distributor and measures the amount of nitrogen in each batch. Fertilizer from distributor A contained 32 pounds per batch and fertilizer from distributor B contained 25 pounds per batch. Suppose the population standard deviation for distributor A and distributor B is six pounds per batch and seven pounds per batch. respectively. Assume the distribution of nitrogen in fertilizer is normaliy distributed. Let #1 and {.12 represent the average amount of nitrogen per batch for fertilizer's A and B, respectively. Which of the following is the correct value of the test statistic? Multiple Choice 0 z=1.5185 O :5 = -1.5135 0 t5 = 1.5135 0 =-1.sias TB MC Ou. 10-53 (Algo) A farmer uses a lot of... A farmer uses a lot of fertilizer to grow his crops. The fanner's manager thinks fertilizer products from distributor A contain more of the nitrogen that his plants need than distributor B's fertilizer does He takes two independent samples of six batches of fertilizer from each distributor and measures the amount of nitrogen in each batch. Fertilizer from distributor A contained 1? pounds per batch and fertilizer from distributor B contained 12 pounds per batch. Suppose the population standard deviation for distributor A and distributor B is six pounds per batch and seven pounds per batch, respectively. Assume the distribution of nitrogen in fertilizer is normally distributed. Let #1 and ,uz represent the average amount of nitrogen per batch for fertilizers A and B. respectively. Which of the fotlowing is an appropriate p-value? Multiple Choice 0 0.1175 0.1512 0 0 0.0920 0 0.1224 TB MC Qu. 10-33 (Static) What formula is used to calculate... What formula is used to calculate the degrees of freedom for the t test for comparing two population means when the population variances are unknown and unequal? Multiple Choice 13/ NW df = #1 -1 O df = n1 + n2 - 2 O df = n1 + 02 - 1 O df = n - 1