Consumer groups are concerned that cereals with a high sugar content (usually designed for children) are placed just where kids are most likely to see them—in the middle shelf of the supermarket. The variable Middle indicates whether the cereal is located on shelf 2, the middle shelf.
a) Compare the sugar content of the cereals on the middle shelf versus those on shelves 1 and 3 with displays and summary statistics.
b) By shuffling the variable Middle 1000 times, investigate whether the mean sugar content difference between the two groups of cereals could have arisen by chance. What do you conclude?