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Confidence in banks: A poll conducted asked a random sample of 1400 adults in the United States how much confidence they had in banks and other financial institutions. A total of 147 adults said that they had a great deal of confidence. An economist claims that less than 12% of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both =α0.05 and =α0.10 levels of significance and the P-value method with the TI-84 Plus calculator. (a) State the appropriate null and alternate hypotheses.

Confidence in banks: A poll conducted asked a random sample of 1400 adults in the United States how much confidence they had in banks and other financial institutions. A total of 147 adults said that they had a great deal of confidence. An economist claims that less than 12% of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both =α0.05 and =α0.10 levels of significance and the P-value method with the TI-84 Plus calculator. (a) State the appropriate null and alternate hypotheses.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Confidence in banks: A poll conducted asked a random sample of 1400 adults in the United States how much confidence they had in banks and other financial institutions. A total of 147 adults said that they had a great deal of confidence. An economist claims that less than 12% of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both =α0.05 and =α0.10 levels of significance and the P-value method with the TI-84 Plus calculator.

(a) State the appropriate null and alternate hypotheses.

:H0
:H1
This hypothesis test is a _ test.
(b) Compute the value of the test statistic.
(c) Compute the P-value.
(d) Determine whether to reject H0.

(e) State a conclusion.

At the
=α0.10
level of significance, there ▼(Choose one) enough evidence to conclude that less than
12%
of U.S. adults have a great deal of confidence in banks.
At the
=α0.05
level of significance, there ▼(Choose one) enough evidence to conclude that less than
12%
of U.S. adults have a great deal of confidence in banks.
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