State the null hypothesis and the alternative hypothesis for each of the following:

A. State the null hypothesis (Ho) and the alternative hypothesis (Ha) for each of the following: 1. A musician believes that listening to classical music affects the mood of a person. Ho: Ha: 2. The mean age of professors in certain universities in Baguio is more than 40 years. Ho: Ha: 3. The average traffic violation in Baguio city is 20 violations per day. Ho: Ha: 4. A sociologist claims that unemployment rate in the Philippines is 42%. Ho: Ha: 5. A manufacturer claims that a new tire has a shorter skid distance. Ho: Ha