Section I: Multiple Choice Select the best answer for each question. Questions T5.5 to T5.7 refer to the following setting. One thousand students at a city high school were classified according to both GPA and whether or not they consistently skipped classes. The two-way table below summarizes the data. Suppose that we choose a student from the school at random. GPA Skipped Classes <2.0 2.03.0 >3.0 Many 80 25 5 Few 175 450 265 What is the probability that a student has a GPA under 2.0? (a) 0.227 (b) 0.255 (c) 0.450 (d) 0.475 (e) 0.506

Chapter 13 ---- Comparing Two Means Comparing two means with the “Two Sample t-Test” (Two Independent Samples Design) Take two groups of people (items) randomly and take one measurement per person. These groups have not been matched up by any criterion but rather the people selected in group 1 are selected independently of the people in group 2. The people selected in group 1 do not...