In order to determine the effects of alcohol on reaction time, 40 randomly selected adult male individuals were assigned to four treatment groups of ten subjects each. The first group was asked to consume the alcoholic equivalent of five beers in a two-hour period, the second group three beers, the third group one beer, and the fourth group no beer. Then, the participants were tested for reaction time by being asked to depress a button as soon as the light they were looking at was turned on. The average time over ten trials for each individual was recorded:

G1G2G3G4

.36.36.40.45

.33.29.26.38

.37.32.40.46

.41.27.39.44

.32.27.43.44

.25.24.36.46

.30.29.30.41

.37.30.38.39

.31.34.45.44

.25.37.24.36

State the hypothesis being tested in this ANOVA, ask SPSS to analyze the data, including a Duncan post-hoc analysis, and draw conclusions at the .05 level. Be sure to include a statement to be tested, describe the random variables involved and assumptions about them, level of significance, test statistic, and the critical region.