Twenty students are given an attitude test before and after viewing a motion picture designed to change their attitudes favorably toward a new curriculum. A high score indicates a favorable attitude and a low score indicates an unfavorable attitude, with the scores ranging from 1 to 30. This problem will use the sign test on the data given below to see if we can conclude the motion picture was successful in improving attitudes. 
Describe what the test statistic is for the sign test.
________________________________________________________
What is the value of the test statistic in this problem?
______________
Is this a one-tailed test or a two-tailed test?
______________
Find the rejection region for 
= 0.10.
Reject 
when T > ______________
Using 
as above, can we conclude the motion picture was successful in changing attitudes?
______________
Conclusion: The motion picture was ______________ in changing attitudes.
At what level of significance could we reject H0?
______________
Definitions:
Corporation
A legal entity that is separate and distinct from its owners, who are shareholders; it has its rights, privileges, and liabilities distinct from those of its members.
Legal Contracts
Binding agreements between two or more parties that are enforceable by law.
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