Meddicorp Co. sells medical supplies to hospitals, clinics, and doctors’ offices. The company currently markets in three regions of the US: the South, the West, and the Midwest. Meddicorp’s management is concerned with the effectiveness of a new bonus program. Management wants to know is bonuses paid in 2013 are related to sales. They also want to take into account the effects of advertising. The data, on the tab Meddicorp, are: SALES sales (in thousands of dollars in each territory for 2013 ADV the amount spent on advertising in each territory (in hundreds of dollars) BONUS the total amount of bonuses paid in each territory (in hundreds of dollars) First, test if sales differ as a function of advertising and bonus amounts. Then, add a test to determine if sales differ by region. Finally, test if there is a differential effect of bonus by region. Tell the story at each step. SALES ADV BONUS South West REGION963.50 374.27 230.98 1.00 0.00 1893.00 408.50 236.28 1.00 0.00 11057.25 414.31 271.57 1.00 0.00 11183.25 448.42 291.20 0.00 1.00 21419.50 517.88 282.17 0.00 0.00 31547.75 637.60 321.16 0.00 0.00 31580.00 635.72 294.32 0.00 0.00 31071.50 446.86 305.69 1.00 0.00 11078.25 489.59 238.41 1.00 0.00 11122.50 500.56 271.38 0.00 1.00 21304.75 484.18 332.64 0.00 0.00 31552.25 618.07 261.80 0.00 0.00 31040.00 453.39 235.63 1.00 0.00 11045.25 440.86 249.68 0.00 1.00 21102.25 487.79 232.99 0.00 1.00 21225.25 537.67 272.20 0.00 1.00 21508.00 612.21 266.64 0.00 0.00 31564.25 601.46 277.44 0.00 0.00 31634.75 585.10 312.35 0.00 0.00 31159.25 524.56 292.87 1.00 0.00 11202.75 535.17 268.27 0.00 1.00 21294.25 486.03 309.85 0.00 1.00 21467.50 540.17 291.03 0.00 0.00 31583.75 583.85 289.29 0.00 0.00 31124.75 499.15 272.55 0.00 1.00 2