confidence in banks
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.
|a.||State the appropriate null and alternate hypotheses.|
|b.||Compute the test statistic z.|
|c.||Using α = 0.05, can you conclude that the executive’s claim is true?|
|d.||Using α = 0.01, can you conclude that the executive’s claim is true?|