Confidence in banks: A poll conducted by the General Social Survey asked a random sample of 1325 adults in the United States how much confidence they had in banks and other financial institutions. A total of 149 adults said that they had a great deal of confidence. An economist claims that less than 15% of U.S. adults have a great deal of confidence in banks. Page a. State the appropriate null and alternate hypotheses. b. Compute the test statistic z. c. Using a – 0.05, can you conclude that the executive's claim is true? d. Using a = 0.01, can you conclude that the executive's claim is true?

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