Observations are taken on sales of a certain mountain bike in 20 sporting goods stores....

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Accounting

Observations are taken on sales of a certain mountain bike in 20 sporting goods stores. The regression model was Y = total sales (thousands of dollars), X1 = display floor space (square meters), X2 = competitors' advertising expenditures (thousands of dollars), X3 = advertised price (dollars per unit). (a) Fill in the values in the table given here. (Negative values should be indicated by a minus sign. Leave no cells blank - be certain to enter "0" wherever required. Round your t-values to 3 decimal places and p-values to 4 decimal places.)

Predictor Coefficient SE tcalc p-value
Intercept 1,271.3 337.9
FloorSpace 11.001 1.80
Competing Ads -6.820 3.995
Price -0.14882 0.08678

(b-1) What is the critical value of Student's t in Appendix D for a two-tailed test at = .01? (Round your answer to 3 decimal places.) t-value = (b-2) Choose the correct option.

multiple choice

  • Only CompetingAds differs significantly from zero.

  • Only FloorSpace differs significantly from zero.

  • Only Price differs significantly from zero.

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