1. At Penn State, 60% of the students are from the southern
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1. At Penn State, 60% of the students are from the southern part of the U.S. 30% are from the north, and the remaining 10% are from another country. All students must take and pass an Entry Level physiology test test. 60% of the southerners have passed the physiology test, 70% of the northerners have passed the test, and 90% of the foreigners have passed the test.
A. The probability that a randomly selected student is someone from the north who has not passed the test is ________.
B. The probability that a randomly selected student has passed the test is ________.
C. The probability that a randomly selected student is not from the south and has not passed the test is ________.
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The expert examines Penn State for 60% of the students from the south.
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