Type of packaging used for potato chips

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Consumer psychologists wants to know whether the type of packaging used for potato chips has the same appeal for all people or whether that appeal depends on income of the consumer. One hundred people from high income group and 100 people from low income group are randomly selected for and interviewed regarding their preference for packaging. The following results were obtained :  Data is in the following form

Package type                              High Income                                   low income

Metalic packaging                       36                                                     84

Waxed paper                               39                                                     51

Cellophane                                  16                                                      44

no preference                                9                                                    21

What I need to know is what would be the null hypothesis and the alternative hypothesis and what significance test would be used?

Reference no: EM131672084

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