Pr3. Anova one factor
In order to test the strength of four brands of trash bags,
one-pound weights were placed into bags, one at a time
until the bag broke.
A total of 50 bags, 10 of each brand, were used. The data in the table below
gives the weight required to break the trash bag.
KROGER	GLAD	HEFTY	TUFFSTUFF	WAND
34	32	33	38	36
30	50	34	29	29
44	40	32	20	29
38	40	40	35	28
36	32	40	20	34
31	48	34	19	29
34	39	36	31	30
42	43	36	35	36
37	38	32	29	30
38	38	37	20	25
a) Using Data analysis/Anova, test at the level of significance 0.05 for the evidence
of the difference in the mean strength of the five brands of trash bags .
(Short solution using Data Analysis only)
b) If appropriate, determine which brands differ in mean strength
Use Tukey-Kramer procedure.
c) Rank the means