employee level of satisfaction

Job Sharers (sample size 24, sample mean 6.60)

Full-time employees (sample size 24, sample mean 5.37)

Part time employees (sample size 20, sample mean 5.20)

what model to use for modelling data set

what is corresponding model equation

what is numerator/denominator df's for the F test

Test stat has value F=6.62. Use test with sig level of .05 to determine if plausible that true average satisfaction levels are identical for the three groups