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Romy, as a marketing manager will examine whether there is an effect of advertising on sales
at his companies. For the purpose of this research, 8 similar companies that have carried out
promotions were taken. He suspects that there is a positive influence between promotion and
Sales (Y) 40 45 54 62 75 70 73 75
Promotion (X) 21 18 30 20 27 32 19 21
Calculate R square, F count, model equations, hypotheses and conclusions (Manually)
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