Consider a hypothesis test of the claim that wearing a particular type of shoe reduces the likelihood of developing a bunion. What is the null hypothesis in this test?
a. The shoe type has no effect on the likelihood of developing a bunion.
b. The shoe type increases the likelihood of developing a bunion.
c. The shoe type decreases the likelihood of developing a bunion.
d. The shoe type has a variable effect on the likelihood of developing a bunion.
