2017-2018 Margin of Error

2017/12/2 SAT Math
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Jasmine and Daniel are each conducting a survey among the 1,190 students at the North High School to determine the proportion of students who would be interested in a new after-school sports club. Jasmine randomly selected 100 students to survey, and Daniel randomly selected 50 students to survey. In both surveys, 34% of students indicated they are interested. If J represents the margin of error for Jasmine’s sample proportion, D represents the margin of error for Daniel’s sample proportion, and both students have the same amount of confidence in their results, which of the following is most likely true?
(A) J<D
(B) J>D
(C) J=D
(D) The relationship between J and D cannot be determined.
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2018/5/5 SAT Math
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An ecologist selected a random sample of 50 prairie dogs from a colony and found that the mean mass of the prairie dogs in the sample was 0.94 kilograms (kg) with an associated margin of error of 0.12 kg. Which of the following is the best interpretation of the ecologist’s findings?
(A) All prairie dogs in the sample have a mass between 0.82 kg and 1.06 kg.
(B) Most prairie dogs in the colony have a mass between 0.82 kg and 1.06 kg.
(C) Any mass between 0.82 kg and 1.06 kg is a plausible value for the mean mass of the prairie dogs in the sample.
(D) Any mass between 0.82 kg and 1.06 kg is a plausible value for the mean mass of the prairie dogs in the colony.
亞太區考題改寫