Observations are taken on sales of a certain mountain bike in 26 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-C_calcp-value

Intercept 1,288.7 306.2 ? ?

FloorSpace 11.055 1.24 ? ?

Competing Ads -6.927 3.959 ? ?

Price -0.14791 0.08143 ? ?

(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 =