A paper mill wants to buy one of two poplar groves to make paper. The size of the trees plays an important role in this matter. 36 trees from each poplar are selected as a sample and the information on the trunk diameters in the table is obtained. According to the data, what is the alternative hypothesis and test result to be tested for us to choose the second poplar at the 0.05 significance level? First Poplar Second Poplar Average 18 20 Variance 16 36 Please choose one: a. Ha: µ1> µ2 and Ho are rejected. b. Ha: µ1 <µ2 and Ho cannot be rejected. c. Ha: µ1> µ2 and Ho cannot be rejected. D. Ha: µ1 <µ2 and Ho are rejected.

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