step  Recall the GLM Univariate dialog box.

step  Select Store ID as the random factor.

step  Click Model.

step  Select Custom as the model type.

step  Select shopfor(F) and usecoup(F) in the Factors and Covariates list.

step  Select Main effects from the Build Term(s) drop-down list and select the main effects to the model.

step  Select shopfor(F) and usecoup(F) in the Factors and Covariates list.

step  Select Interaction from the Build Term(s) drop-down list and select the interaction term to the model.

step  Select storeid(R) in the Factors and Covariates list and select it to the model.

step  Click Continue.

step  Click OK in the GLM Univariate dialog box.