Chapter 9: Hypothesis Tests for a Single Population Proportion Score: 0/14 0/14 answered Question 4 A well-known brokerage firm executive claimed that 50% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 400 people, 52% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 50% at the 0.005 significance level. The null and alternative hypothesis would be: Ho: p 0.5 H1:p 0.5 H1:p / 0.5 H1 :p