13 14 15 16 17 18 19 20 21 22 23 A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 73%. Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. State the null hypothesis Ho and the alternative hypothesis H, that we would use for this test. Ho: X P H: I O S SO >0 020 0-0 070 X 5