Question: Question 8 (4 points) If testing to see if a marketing program made a difference in sales by comparing sales before and after the advertising

Question 8 (4 points) If testing to see if a

Question 8 (4 points) If testing to see if a marketing program made a difference in sales by comparing sales before and after the advertising campaign was launched, what would be the correct null hypothesis? Oa) 41 - U2 0 Ob) up = 0 O c) 41-42

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