In: Statistics and Probability
            Random samples of people ages 15-24 and 25-34 were asked about
their preferred method of communication...
                
            
- Random samples of people ages 15-24 and 25-34 were asked about
their preferred method of communication with friends. The
respondents were asked to select one of the methods from the
following list: cell phone, instant message, e-mail, other.
 
Age                 
Cell
Phone                  
Instant
Message                    
E-Mail            
Other
                       
Obs.,
Exp                    
Obs.,
Exp                                
Obs., Exp         Obs.,
Exp
15-24              
48                               
40                               
           
5                     
7
25-34              
41                               
30                               
           
15                   
14
Test whether the two populations share the same proportions of
preferences for each type of communication method. Use α = 0.05