1.A researcher is interested in the effects of stress on reaction time. She gives a reaction time test to three groups: a group under no stress, a group under moderate stress, and a group under extreme stress.

a. Use an ANOVA with = .05 to determine whether there are significant differences between groups.

b. If appropriate, compute 2

c. Write statement about what conclusions we can draw from this test.

No Stress

51

44

33

45

67

Moderate Stress

23

43

23

41

45

Extreme Stress

56

77

74

87

56