Question

Use SPSS for this Application Exercise:

Scientist warn that food shortages are an impending future issue for humans. A potential solution is eating non-traditional foods in the western world. An experimental psychologist knows that westerners are uncomfortable eating food other cultures have no trouble eating. The psychologist developed a method to help individuals tolerate more the eating of non-ordinary food. However, the psychologist is unsure which type(s) of foods the method will be more effective on. The psychologist has some participants go through the method and then asks them to eat each of the following out of the ordinary foods: stick insects, bovine testicles, fish eyes, and Witchetty grubs. On each occasion, participants are measured on how many seconds it takes before they gagged while eating the food. The data are in the table below. What can the psychologist concluded with α = 0.01?

stick	bovine	fish	grub
7 8 6 4 8 7 9 11	6 4 1 2 3 4 1 5	1 2 3 1 4 4 6 7	5 4 7 8 7 6 1 0

a) What is the appropriate test statistic?
---Select---na, one-way ANOVA, within-subjects ANOVA, two-way ANOVA

b) Input the appropriate value(s) to make a decision about H₀.
p-value =___________ ; Decision: ---Select---Reject H0 or Fail to reject H0

c) Using the SPSS results, compute the corresponding effect size(s) and indicate magnitude(s).
η² =___________________ ; ---Select---na, trivial effect, small effect, medium effect, large effect

d) Make an interpretation based on the results.

-At least one of the foods differed on time before gagging.

-None of the foods differed on time before gagging.    

Answer 1