Suppose you are a big fan of world cup soccer and want to kn

Suppose you are a big fan of world cup soccer and want to know if the soccer balls that are going to be used in the next world cup are of a different weight than the balls used in the last world cup.

A) Would you formulate this as a one or two sided alternative hypothesis?

Solution

Two sided alternative hypothesis would be formulated because when we will compare the weights of the balls of next world cup and the previous years world cup then there would be 3 different situations:

1. Weights are same

2. This year weight is greater

3. This year weight is smaller.