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    Null hypothesis

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    A college class believes that the average grade average of psychology students and the average grade averages of biology students are different. The class found that the actual grade averages of a sample of 8 psychology students was 3.5 and the average grade average of a sample of 11 biology students was 3.2. What is the null hypothesis for this study?

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    The solution provides null hypothesis for a hypothesis testing problem.

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