Business statistics chapter 11-analysis of variance

this is a business statistcs 242 hw. this is an ANOVA TESTS of One way and two way.
I almost finished my hw but I don’t know the last three questions.
On #2, on question “D”, I am done with my dot plot so

you don’t need to draw dot plot ,but you need to do “commenting assumptions” and questions “E”,and “F”.

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