Monica A.

asked • 12/15/19

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?

1 Expert Answer


Johannah I. answered • 12/19/19

5 (3)

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