A psychologist would like to examine the effects of a new drug on the activity level of birds. Three samples of pigeons are selected with n = 5 in each sample. The birds in the first sample serve as a control and do not get any of the drugs. The birds in the second group receive a small dose, and the birds in the third group each get a large dose of the drug. The psychologist records the activity level for each bird. The data from this experiment are presented below. (Use alpha = .05)

No drugSmall doseLarge dose

T =10T =20T =30

SS = 10SS =14SS = 10

G= 45

X²= 229

N= 15

1. State the hypotheses:(2 points)

Null hypothesis:__________________________________________________________

Alternative hypothesis:_____________________________________________________

1. Identify (i) Independent variable and (ii) Dependent variable.
2. Finddf =andFcritical value
3. Do these data indicate any significant differences among the three groups?

1. Complete Source table

SourceSSdfMS

Between treatments___________F()= _

WithinTreatments____________