A study compares the strength of a product between two different materials used to make the product and five different labs that created these products.The profile plot of the group means is shown below. Based on this plot,does there seem to be a main effect for material?
A)Yes
B)No
C)This cannot be determined from the information given.

Question

A study compares the strength of a product between two different materials used to make the product and five different labs that created these products.The profile plot of the group means is shown below.  Based on this plot,does there seem to be a main effect for material?
A)Yes 
B)No 
C)This cannot be determined from the information given.

Quizplus · Accepted Answer

The profile plot shows that one material consistently has higher strength values across all five labs compared to the other material. This indicates a main effect for material.

A Study Compares the Strength of a Product Between Two