State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test these claims:
a. More than 60% of all students at our college work part-time jobs during the academic year.
b. No more than one-third of cigarette smokers are interested in quitting.
c. A majority of the voters will vote for the school budget this year.
d At least three-fourths of the trees in our county were seriously damaged by the storm.
e. The results show the coin was not tossed fairly.