Confidence in banks: A poll conducted asked a random sample of 1276 adults in the United States how much confidence they had in banks and other financial institutions. A total of 150 adults said that they had a great deal of confidence. An economist claims that less than 14% of U.S. adults have a great deal of confidence in banks. Can you conclude that the economists claim is true? Use both (1: 0.01 and (I: 0.05 levels of significance and the Pvalue method with the TI84 Plus calculator: Part: 0/5 Part 1 of5 (a) State the appropriate null and alternate hypotheses. HO: '7' FI =l . i 3:: p H. - Ll This hypothesis test is a (Choose one) V test. X 3 ri - httai led left-tailed twotailed Big babies: The National Health Statistics Reports described a study in which a sample of 315 oneyearold baby boys were weighed. Their mean weight was 25.6 pounds with standard deviation 5.3 pounds. A pediatrician claims that the mean weight of oneyearold boys is greater than 25 pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the (I : 0.05 level of significance and the Pvalue method with the TI84 Plus calculator. Part: 0/5 Part 1 of5 (a) State the appropriate null and alternate hypotheses. H0; | | _l<_ el>l_l El=|_l H1: I I i |.l This hypothesis test is 6 (Choose one) V test. X E) left-tailed . righttailed two-tailed