Many people believe that criminals who plead guilty tend to get lighter sentences than those who are convicted in trials. The accompanying table summarizes randomly selected sample data for defendants in burglary cases. All of the subjects had prior prison sentences. Use a 0.05 significance level to test the claim that the sentence​ (sent to prison or not sent to​ prison) is independent of the plea. If you were an attorney defending a guilty​ defendant, would these results suggest that you should encourage a guilty​ plea?   View the table.   Guilty Plea Not Guilty Plea   Sent to Prison 385 49     Not Sent to Prison 554 55       Determine the test statistic.   χ2= _________ ​(Round to three decimal places as​ needed.) Determine the​ P-value of the test statistic.   ​P-value= _________ ​(Round to four decimal places as​ needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 4BGP
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Section 11.2 Question #7

Many people believe that criminals who plead guilty tend to get lighter sentences than those who are convicted in trials. The accompanying table summarizes randomly selected sample data for defendants in burglary cases. All of the subjects had prior prison sentences. Use a 0.05 significance level to test the claim that the sentence​ (sent to prison or not sent to​ prison) is independent of the plea. If you were an attorney defending a guilty​ defendant, would these results suggest that you should encourage a guilty​ plea?
 
View the table.
 
Guilty Plea
Not Guilty Plea
 
Sent to Prison
385
49
 
 
Not Sent to Prison
554
55
   
 
Determine the test statistic.
 
χ2= _________
​(Round to three decimal places as​ needed.)
Determine the​ P-value of the test statistic.
 
​P-value= _________
​(Round to four decimal places as​ needed.)
 
 
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