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In: Statistics and Probability

Random samples of people ages 15-24 and 25-34 were asked about their preferred method of communication...

  1. 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

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