the amount of sodium (in milligrams) in one serving for a random sample of three different kinds of foods is listed here. condiments cereals desserts 270 260 100 130 220 180 230 290 250 180 290 250 80 200 300 70 320 360 200 140 300 160 at the 0.05 significance level, is there sufficient evidence to conclude that a difference in mean sodium amounts exists among condiments, cereals and desserts?