#4 Please show work

Question 4 10 pts 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: Do the data indicate that there is a difference in mean lifetime for the three brands of ballpoint pens? Use alpha = 0.05 Brand 1 Brand 2 Brand 3 260 175 225 215 240 255 182 165 239 217 218 215