A February 2007 story on www.redandblack.com stated, Students who use laptops in class have lower GPAs, according
Question:
a. Suppose this conclusion was based on a significance test comparing means. Defining notation in context, identify the groups and the population means and state the null hypothesis for the test.
b. Suppose the study conclusion was based on a P-value of 0.01 obtained for the significance test mentioned in part a. Explain what you could learn from a confidence interval comparing the means that you are not able to learn from this P-value.
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a Let group 1 be students who use laptops in class and g...View the full answer
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Related Book For 
Statistics The Art And Science Of Learning From Data
ISBN: 9780321755940
3rd Edition
Authors: Alan Agresti, Christine A. Franklin
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