A certain university has decided to introduce the employ of plus and minus with letter grades, as long as there is evidence that more than 45% of the faculty favor the change. A random sample of faculty will be selected, and the resulting data will be used to test the relevant hypotheses. If ? represents the true proportion of all faculty that favor a change to plus-minus grading, which of the following pair of hypotheses should the administration test:
H0: ? = 0.45 versus Ha: ? > 0.45
or
H0: ? = 0.45 versus Ha: ? < 0.45