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coderversion1
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Hi,
Anyone out there who can express his/her experience with MGMAT(Manhattan GMAT) CR questions, in free CAT. I felt the answer choices very ambiguous in some of them. For ex.
1. The number of new cases of tuberculosis diagnosed in Country X increased dramatically this year. The country's news media have speculated that the sharp increase in new cases is the result of the tuberculosis outbreak that occurred in neighboring Country Y last year. Health officials in Country X have therefore proposed that all visitors from Country Y must submit to a medical examination before entering Country X.
Which of the following, if true, most strongly suggests that the proposed medical examinations will NOT help curb the spread of tuberculosis in Country X?
Country Z, which also neighbors Country Y, has not experienced an increase in cases of tuberculosis.
Current medical technology is not capable of detecting all carriers of tuberculosis.
Country X does not have the resources to examine all visitors from Country Y.
Tuberculosis is not spread through human contact.
Citizens of Country Y will not travel to Country X if the proposal is implemented.
2. Everyone who has graduated from TopNotch High School has an intelligence quotient (IQ) of over 120. Most students with an IQ of over 120 and all students with an IQ of over 150 who apply to one or more Ivy League universities are accepted by at least one of them.
The statements above, if true, best support which of the following conclusions?
Every graduate of TopNotch High School with an IQ of 150 has been accepted by at least one Ivy-League university.
If a person is a high-school graduate and has an IQ of less than 100, he or she could not have been a student at TopNotch High School.
If a person has an IQ of 130 and is attending an Ivy-League university, it is possible for him or her to have graduated from TopNotch High School.
At least one graduate from TopNotch high school who has applied to at least one Ivy-League university has been accepted to one of them.
If a high-school graduate has an IQ of 150 and is not attending an Ivy-League university, then he or she did not apply to one of them.
3. Calorie restriction, a diet high in nutrients but low in calories, is known to prolong the life of rats and mice by preventing heart disease, cancer, diabetes, and other diseases. A six-month study of 48 moderately overweight people, who each reduced their calorie intake by at least 25 percent, demonstrated decreases in insulin levels and body temperature, with the greatest decrease observed in individuals with the greatest percentage change in their calorie intake. Low insulin level and body temperature are both considered signs of longevity, partly because an earlier study by other researchers found both traits in long-lived people.
If the above statements are true, they support which of the following inferences?
Calorie restriction produces similar results in humans as it does in rats and mice.
Humans who reduce their calorie intake by at least 25 percent on a long-term basis will live longer than they would have had they not done so.
Calorie intake is directly correlated to insulin level in moderately overweight individuals.
Individuals with low insulin levels are healthier than individuals with high insulin levels.
Some individuals in the study reduced their calorie intake by more than 25 percent.
OA after disc.
Anyone out there who can express his/her experience with MGMAT(Manhattan GMAT) CR questions, in free CAT. I felt the answer choices very ambiguous in some of them. For ex.
1. The number of new cases of tuberculosis diagnosed in Country X increased dramatically this year. The country's news media have speculated that the sharp increase in new cases is the result of the tuberculosis outbreak that occurred in neighboring Country Y last year. Health officials in Country X have therefore proposed that all visitors from Country Y must submit to a medical examination before entering Country X.
Which of the following, if true, most strongly suggests that the proposed medical examinations will NOT help curb the spread of tuberculosis in Country X?
Country Z, which also neighbors Country Y, has not experienced an increase in cases of tuberculosis.
Current medical technology is not capable of detecting all carriers of tuberculosis.
Country X does not have the resources to examine all visitors from Country Y.
Tuberculosis is not spread through human contact.
Citizens of Country Y will not travel to Country X if the proposal is implemented.
2. Everyone who has graduated from TopNotch High School has an intelligence quotient (IQ) of over 120. Most students with an IQ of over 120 and all students with an IQ of over 150 who apply to one or more Ivy League universities are accepted by at least one of them.
The statements above, if true, best support which of the following conclusions?
Every graduate of TopNotch High School with an IQ of 150 has been accepted by at least one Ivy-League university.
If a person is a high-school graduate and has an IQ of less than 100, he or she could not have been a student at TopNotch High School.
If a person has an IQ of 130 and is attending an Ivy-League university, it is possible for him or her to have graduated from TopNotch High School.
At least one graduate from TopNotch high school who has applied to at least one Ivy-League university has been accepted to one of them.
If a high-school graduate has an IQ of 150 and is not attending an Ivy-League university, then he or she did not apply to one of them.
3. Calorie restriction, a diet high in nutrients but low in calories, is known to prolong the life of rats and mice by preventing heart disease, cancer, diabetes, and other diseases. A six-month study of 48 moderately overweight people, who each reduced their calorie intake by at least 25 percent, demonstrated decreases in insulin levels and body temperature, with the greatest decrease observed in individuals with the greatest percentage change in their calorie intake. Low insulin level and body temperature are both considered signs of longevity, partly because an earlier study by other researchers found both traits in long-lived people.
If the above statements are true, they support which of the following inferences?
Calorie restriction produces similar results in humans as it does in rats and mice.
Humans who reduce their calorie intake by at least 25 percent on a long-term basis will live longer than they would have had they not done so.
Calorie intake is directly correlated to insulin level in moderately overweight individuals.
Individuals with low insulin levels are healthier than individuals with high insulin levels.
Some individuals in the study reduced their calorie intake by more than 25 percent.
OA after disc.
