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Question 1 7-20: The following data on calcium content of wheat are consistent with summary quantities that appeared in a recent article on the mineral contents of cereal grains as affected by storage and insect infestation. The experiment considered four different storage times: 0, l, 2, and 4 months. Storage Calcium Content Period lmonths 58.87 56.43 56.51 57.67 59.75 58.48 2months 59.13 60.38 58.01 59.95 59.51 60.34 58.76 60.03 59.36 20. Using the results of the post-hoe analysis below, which storage time should be used? D'N-b >> Last Sq Mean 60.338333 59.553333 57.951667 57.493333