SCENARIO 4-15
At a Texas college, 60% of the students are from the southern part of the state, 30% are from the
northern part of the state, and the remaining 10% are from out-of-state. All students must take and
pass an Entry Level Math (ELM) test. 60% of the southerners have passed the ELM, 70% of the
northerners have passed the ELM, and 90% of the out-of-staters have passed the ELM.
-Referring to Scenario 4-15, if a randomly selected student has passed the ELM, the probability
the student is from out-of-state is ________.

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The Answer of SCENARIO 4-15
At a Texas college, 60% of the students are from the southern part of the state, 30% are from the
northern part of the state, and the remaining 10% are from out-of-state. All students must take and
pass an Entry Level Math (ELM) test. 60% of the southerners have passed the ELM, 70% of the
northerners have passed the ELM, and 90% of the out-of-staters have passed the ELM.
-Referring to Scenario 4-15, if a randomly selected student has passed the ELM, the probability
the student is from out-of-state is ________.

SCENARIO 4-15 at a Texas College, 60% of the Students Are from Are