A consumer magazine wants to compare the lifetimes of ballpoint pens of three different types. The magazine takes a random sample of pens of each type in the following table.

A	B	C
38	32	24
36	27	25
31	28	29
42		26
29

Does the data indicate that there is a difference in mean lifetime for the three brands of ballpoint pens at significance level 0.05? When appropriate, use a family confidence level of 0.95 for multiple comparisons and interpret your results.