Kohls wishes to investigate the relationship between level of advertising, coupon value and sales. Kohls advertises several times a month and includes a coupon (in dollars) with each advertisement. The value of the coupon remains the same in a month but varies from month to month. Kohls expects that the number advertisements and coupon value have a positive impact on sales. In addition, Kohls expects that the impact of advertisements increases as the coupon value increases. Kohls collects the sales (in thousands of dollars), number of ads and coupon value for the last one year. Express the model that the company must use, state the null and alternate hypothesis, estimate the model and provide interpretation. *How does this information get entered into SPSS with a multiple linear regression model*