Please help with question A. The answer and work can be found online but the question is slightly worded differently. Please include R code and anything else needed in the question.

should be individually uploaded in BB by the due date. Question A: 2*3 = 6 points The following data gives the monthly sales (in thousands of dollars) for different advertising expenditures (also in thousands of dollars) and sales commission percentages. Sales 245 138 352 322 228 275 560 366 Advertising 16.5 18 .0 22 . 3 17 .4 19.0 20.0 32. 0 18 .6 Commission 10.5 2.0 4.0 3 .5 4.5 1 . 8 9.0 8 . 5 1. At the 5% level of significance, are advertising expenditure or sales commission percentage significant contributors to the overall monthly sales? Why? [Show your code in "R Code" section. Show the answer in "Answer" section. Include the mathematical notations of two sets of null and alternate hypotheses and the phrase "advertising expenditure" or "sales commission percentage" or "both" along with a justification in a few sentences in "Comments" section.] 2. What amount of sales would this model predict for advertising expenditures of 25,000 and sales commission of 8%? [Show your code in "R Code" section. Show the answer in "Answer" section. Leave "Comments" section blank.] Question B: 3*2 = 6 points