Do young children use cell phones? Apparently so, according to a recent study (A. Ross, Message to
Question:
a. Using a 0.05 level of significance, is there evidence of a difference in the variances of cell phone usage between cell phone users under 12 years of age and cell phone users 13 to 17 years of age?
b. On the basis of the results in (a), which t test defined in Section 10.1 should you use to compare the means of the two groups of cell phone users? Discuss.
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Related Book For
Basic Business Statistics Concepts And Applications
ISBN: 9780132168380
12th Edition
Authors: Mark L. Berenson, David M. Levine, Timothy C. Krehbiel
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