Value change if she has tested her null hypothesis

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A group of students recently commented that all of the statistics courses are offered in the morning and they can do better if the course were offeredin the afternoon. To test this claim the professor decides to do a small study. The professor knows from past experience that scores from the morning sections of the final examination are normally distributed with a u= 75. The afternoon class has 36 students who generate a sample mean of M= 80 with a SS = 5040. a) Do the students in the afternoon section of the class perform better than the previous students who took the class in the morning? Test at a= .05, two-tailed. Compute cohens d to quantify the magnitude of the effect. b) would your value change if she has tested her null hypothesis at a= .01, two tailed? Explain

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