An agricultural scientist was given the following data for the number of kilograms of fruit produced by eight randomly chosen four-year-old trees of three specifically chosen experimental varieties of mango and asked to identify the variety that was producing the greatest weight of fruit.
(a) Does a singlefactor ANOVA show a significant difference among varieties?
(b) Is a posteriori testing needed? If so, which variety is yielding the greatest weight of fruit and is it significantly different to the other two?
