Chapter 3InClassExample_Answers

Chapter 3InClassExample_Answers - - A w One thousand...

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Unformatted text preview: - A w One thousand students at a city high school were classified both according to GPA and whether or not they consistently skipped classes. The table reflects the information. GPA < 2.0 80 175 255 GPA is 2.0 – 3.0 25 450 475 GPA > 3.0 5 265 270 Total 110 890 Consistently skipped classes Did not consistently skip classes Total Address parts (a) – (d). Show work and/or explain; otherwise no credit will be given. You do NOT have to answer these questions with English sentences. (a) What percentage of the students have a GPA between 2.0 and 3.0 (inclusive)? Answer: 475 = 47.5% 1000 (b) What percentage of the students have a GPA under 2.0 and have consistently skipped classes? Answer: 80 = 8% 1000 (c) What percentage of the students have a GPA under 2.0 or have consistently skipped classes? Answer: 285 = 28.5% 1000 (d) What percentage of the students have a GPA under 2.0 given that they consistently skipped classes? Answer: 80 8 = = 72.72% 110 11 ...
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