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?


2 Answers By Expert Tutors

By:

Yves S. answered • 12/20/19

Tutor
5.0 (830)

Statistics and how to interpret results in the medical field

Peter K. answered • 12/15/19

Tutor
5 (3)

Math / Statistics / Data Analytics

Peter K.

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12/16/19

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