A psychologist would like to examine the effects of sugar consumption on the act

Question

A psychologist would like to examine the effects of sugar consumption on the activity level of preschool children. Three samples of children are selected with n = 5 In each sample. One group gets no sugar, one group gets a small dose, and the third group gets a large dose. The psychologist records the activity level for each child. The data from this experiment are presented below. a. Fill in the ANOVA table below: Source SS df MS F Between Within Total b. Do these data indicate any significant differences among the three groups? Test with alpha = 05. F_critical = __ Decision = __ c. Compute eta^2, the percentage of variance accounted for by the treatment. eta^2 = ____

Explanation / Answer

A). Source     SS     df     MS              
   Between Treatments    10    2    5 F(2, 12) = 1.25
   Within Treatments     48     12     4   
   Total 58     14  
  

    With alpha = .05

Df = 2, 12

the critical value is 3.88

so Fail to reject H0 and conclude   
   that the sugar has no significant effect on activity level.
   b. For these data,

2 = 10/58 = 0.172.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.