According to the U.S. Census Bureau, 10.5% of registered births in the United States in 2007 were

Question:

According to the U.S. Census Bureau, 10.5% of registered births in the United States in 2007 were to teenage mothers. A sociologist believes that this percentage has increased since then.
(a) Determine the null and alternative hypotheses,
(b) Explain what it would mean to make a Type I error, and
(c) Explain what it would mean to make a Type II error.