Ignacio Posted June 22, 2019 Share Posted June 22, 2019 I´m struggling with this Manhattan question: "Jane scored in the 68th percentile on a test, and John scored in the 32nd percentile. A: The proportion of the class that received a score less than John’s score. B: The proportion of the class that scored equal to or greater than Jane’s score." The answer is supposed to be C, but suppose 101 people were graded, and all of them obtained a different score. If we order all scores in ascending order, John is in the position 33 and Jane is in the position 69. Thus, quantity A equals 32/101 and quantity B equals 33/101, which are not equal. I guess I must be making a mistake, although I cannot see it yet. I would appreciate any help on this. Thanks! Quote Link to comment Share on other sites More sharing options...
raf1061 Posted July 15, 2020 Share Posted July 15, 2020 I´m struggling with this Manhattan question: "Jane scored in the 68th percentile on a test, and John scored in the 32nd percentile. A: The proportion of the class that received a score less than John’s score. B: The proportion of the class that scored equal to or greater than Jane’s score." The answer is supposed to be C, but suppose 101 people were graded, and all of them obtained a different score. If we order all scores in ascending order, John is in the position 33 and Jane is in the position 69. Thus, quantity A equals 32/101 and quantity B equals 33/101, which are not equal. I guess I must be making a mistake, although I cannot see it yet. I would appreciate any help on this. Thanks! The answer should be D. As there is no mentioning about the nature of the distribution. It could have been Uniform distribution or normal distribution Quote Link to comment Share on other sites More sharing options...
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