# Question: is there an association between gender and concerns about data...

###### Question details

Is there an association between gender and concerns about data privacy? A sample was collected from 800 teenage students and the table of observed frequency, expected frequency and chi square contributions are provided below.

a. Calculate the Expected frequency and the Chi-square contribution for Boy and More concerned (indicated with question marks in the tables below) and perform Chi-square analysis to answer the question above at 5% level.

b. What will be your conclusion if the significance level is now 1%?

OBSERVED Frequency | |||

More concerned | Less concerned | TOTAL | |

Boy | 185 | 220 | 405 |

Girl | 213 | 182 | 395 |

TOTAL | 398 | 402 | 800 |

EXPECTED Frequency | |||

More concerned | Less concerned | TOTAL | |

Boy | ? | 405 | |

Girl | 395 | ||

TOTAL | 398 | 402 | 800 |

Chi-Square Contribution | |||

More concerned | Less concerned | TOTAL | |

Boy | ? | 1.34 | 2.68 |

Girl | 1.38 | 1.37 | 2.75 |

TOTAL | 2.73 | 2.71 | 5.44 |