Attempts: Average: Two-factor ANOVA Emphasis on calculations W Thomas Boyce , professor and pedlatrician at the University of British Columbia Vancouver; has studied Interactions berween Individual differences physiology and differences experience In derermining health and well-being; Dr; Boyce found thar some children are more sensitive to thelr environments_ They do exceptlonally wel when the environment supportive but are much more Iikely to have mental and physical health problems when the environment has challenges: You decide t0 do similar study, conducting factorial experiment to test the effectiveness of one envlronmental factor and one physiological factor physical health outcome: As the environmental factor; You choose two levels of ora nyglene. As the physiological factor You choose Inree levels of cortisol value_ Tne outcome number 0f cavitles, and the research participants are kindergartners You conduct Ewo-factor ANOVA on the data The two-factor ANOVA Involves several hypothesis tests, Which of the followling are null hypotheses that YO could Use thls ANOVA t0 test? Check all that apply. Oral hygiene has no effect on number of cavities: Cortiso value has no effect on number of cavities_ The effect of oral hygiene on number of cavities is no different from the effect of cortisol valle Tnere no Interaction between oral nyglene and cortisol value_ The results of your study are summarized by the corresponding sample means below: Each cell reports the average number of cavities for 11 kindergartners