Suppose the difference in 4th grade math scores between neighboring districts is 50%. Would a difference of this magnitude be considered practically significant and worth the effort to make changes to curriculum? Yes No The significance level provides the basis for determining if there is enough evidence in the data contrary to the null hypothesis to justify rejecting it. True False Suppose you are investigating if a soft ball is more interesting to dogs than cats as a toy. Your null hypothesis would be something like the following: H0: Dogs prefer a soft ball for a toy at a higher rate than cats do. True False