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At the 0.05 level of significance, is there eviden

At the 0.05 level of significance, is there evidence that the slope of sales with price is different from zero?Construct a 95% confidence interval estimate of the population slope of sales with promotional expendituresThe critical value of t at the 95% confidence level, with 31 degrees of freedom,taking into account the effect of price, the estimated effect of each additional dollar of promotional expenditures is to increase mean sales by approximately 2.22 to 5.01 bars

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