3 populations, and we want to know if the populations have the same mean.

A B C xbar = 62 A s = 5.244 A

58 58 48 66 B 5.148 B

64 69 57 52 C 5.568 C

55 71 59

66 64 47 s^2 = 27.5 A

67 68 49 26.5 B

62 66 52 31.0 C

1. state null hypothese

2. assuming null hypothesis is correct, estimate the population variance

3. using the individual sample variances, compute the within-treatments estimate of the variance

4. compute the test statistic

5. at 95% confidence test to determine if the is a significant difference in the means of the 3 populations.

"need all work"