The table below shows the regression output with sales as the dependent variable and advertising expenditure ($) and time period, t as the independent variables. What is the estimated sales when the advertising expenditure is $1000 and the time period is 5? Intercept Advertising exp t O 120000 O 121769 O 140000 O 150000 Coefficientsandard Err t Stat P-value ! 0.56972 31232.5 46332.7 0.67409 -0.06504 1.21555 -0.05351 0.96219 18120.3 10091.3 1.79565 0.21439

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