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Math Help - Conducting a z Test

  1. #1
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    Conducting a z Test

    A researcher predicts that watching a film on institutionalization will change studentsí attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about their attitudes. The mean score on the questionnaire for these 36 students is 70. The score for a similar class of students who did not see the film is 75. The standard deviation is 12. Using the five steps of hypothesis testing and the 5% significance level (i.e. alpha = .05), does showing the film change studentsí attitudes towards the chronically mentally ill?
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  2. #2
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    Re: Conducting a z Test

    where are you stuck?
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