A teacher in a school was interested in examining differences in children's maths scores across three classes. She was particularly interested in whether the class the child was in had a possible influence on children's maths score.She ran a one-way ANOVA with the predictor variable 'class', which had three categories, 'Yellow Class', 'Green Class' and 'Purple class'; the outcome variable was 'maths score'. Her ANOVA yielded an F-statistic of 4.23 (p = 0.68). How would you interpret her findings?

Group of answer choices

a There is insufficient information; the results of post-hoc tests are needed.

b There is a significant difference in children's maths scores by class membership.

c There is no significant difference in children's maths scores by class membership.

d The results are ambiguous.