Confidence in banks: A poll conducted in 2012 asked a random sample of 1400 adults in the United States how much confidence they had in banks and other financial institutions. A total of 147 adults said that they had a great deal of confidence. An economist claims that less than 12% of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both a = 0.05 and a = 0.10 levels of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 4 Part 1 of 4 (a) State the appropriate null and alternate hypotheses. Ho: p = 0.12 H : p