Confidence in banks: A news poll conducted in  2012  asked a random sample of  1268  adults in the United States how much confidence they had in banks and other financial institutions. A total of  144  adults said that they had a great deal of confidence. An economist claims that less than  11%  of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both the  =α0.05  and  =α0.10  levels of significance and the  P -value method and Excel. Part 1 of 5       (a)State the appropriate null and alternate hypotheses.   H0 :  =p.11   H1 :

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 42PFA
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Confidence in banks: A news poll conducted in 

2012

 asked a random sample of 

1268

 adults in the United States how much confidence they had in banks and other financial institutions. A total of 

144

 adults said that they had a great deal of confidence. An economist claims that less than 

11%

 of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both the 

=α0.05

 and 

=α0.10

 levels of significance and the 

P

-value method and Excel.

Part 1 of 5
 
 

 

(a)State the appropriate null and alternate hypotheses.

 

H0
=p.11
 
H1
<p.11
 
This hypothesis test is a ▼left-tailed test.
 
Alternate Answer:
H0

=p0.11
H1

<p0.11

This hypothesis test is a left-tailed test.

Part: 1 / 5
1 of 5 Parts Complete
 
Part 2 of 5
 
 

 

(b)Compute the test statistic. Do not round intermediate steps. Round the answer to two decimal places.

 

z
=
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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