Bus 190 – Chapter 2 and 3 Homework SolutionsProblem:Chapter 213.a.Reason for ApplyingQualityCost/ConvenienceOtherTotalFull Time0.2180.2040.0390.461Part Time0.2080.3070.0240.539Total0.4260.5110.0631.00 b.It is most likely a student will cite cost or convenience as the first reason: probability = 0.511. School quality is the first reason cited by the second largest number of students: probability = 0.426.c.P (Qualityfull time) = 0.218/0.461 = 0.473d.P (Qualitypart time) = 0.208/0.539 = 0.386e.P (B) = 0.426 and P (BA) = 0.473Since P (B) P (BA), the events are dependent.23.a.P(Oil) = 0.50 + 0.20 = 0.70b.Let S = Soil test resultsEventsP(Ai)P(SAi)P(Ai S)P(Ai S)High Quality (A1)0.500.200.100.435Medium Quality (A2)0.200.200.04
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