If a difference between groups is found to be statistically significant, the difference is thought to be

Nonparametric statistical tests should be used when the _____

a. assumptions of parametric tests are not met b. population distribution is normal c. variances of scores are equal in the populations sampled d. dependent variable achieves interval measurement

Children with learning disabilities are both dyslexic and dyscalculic

Indicate whether the statement is true or false