Here are the results for the KNOWLEDGE questionnaire, which the students completed after their one-hour lecture:

Which is the most sensible conclusion?

(a) There are signifi cant differences between the groups on KNOWLEDGE; specifi cally, Colin Cashew’s group retained more of the lecture than the other two groups

(b) There are signifi cant differences between the groups on KNOWLEDGE; specifi cally, Madame MacAdamia’s group retained more of the lecture than Professor P. Nutt’s group

(c) There are signifi cant differences between all of the groups on KNOWLEDGE; specifi cally, Professor P. Nutt’s group retained more of the lecture than the other two groups

(d) There are no signifi cant differences between the groups on KNOWLEDGE

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ANOVA KNOWLEDGE Sum of Squares df Mean Square F Sig. Between Groups 110.3100 2 55.1550 5.3557 .0057 Within Groups 1482.9689 144 10.2984 Total 1593,2789 146