Question: A physical education teacher measured the amount of time (in minutes) spent in physical activities in PE classes. The sample size was 200 and the researcher compared male and female students and students in 8th and 9th grade.
,
Group Male Female
8th. Grade 98.2 (N=50) 70.1 (N=50)
9th. grade 50.8 (N = 50) 68.3 (N=50)

A two-way ANOVA yielded the following results:
Group F df
Sex 3.61 *1,196
Grade 5.87 *1,196
Sex X Grade 6.96 *1,196

For degrees of freedom n1 is 1 degree of freedom (2 groups and n-1 = 1) in the above chart and n2 is 196 degrees of freedom.

Determine the level of significance of these results and interpret their meaning. (10 points)

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