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Question

A researcher predicts that showing a certain film will *change* people's attitudes toward alcohol. The researchers then randomly select 36 people, show them the film, and give them an attitude questionnaire. The mean score on the attitude questionnaire for this *sample* of people is 70. In the general *population*, the average score for people on this test is 75, with a standard deviation of 12 (assume the alpha level = .05)

1. Identify the independent variable.

2. identify the dependent variable.

3. in a sentence, state the null hypothesis.

4. Using symbols, state the null hypothesis.

4. Using symbols, state the alternative hypothesis.

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Math

Statistics

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