Observations are taken on sales of a certain mountain bike in 24 sporting goods stores. The regression model wasY= 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 to4 decimal places.)

Predictor Coefficient SE t_calcp-value

Intercept 1,254.2 300.2

FloorSpace 11.310 1.69

Competing Ads -6.260 3.999

Price -0.14748 0.08280

(b-1)What is the critical value of Student'stinAppendix Dfor a two-tailed test at= .01?(Round your answer to 3 decimal places.)

t-value =

(b-2)Choose the correct option.

multiple choice

• OnlyCompetingAdsdiffers significantly from zero.
• OnlyFloorSpacediffers significantly from zero.
• OnlyPricediffers significantly from zero.