A survey of 300 travelers was taken at an airport. Of these travelers 90 percent were traveling on Airline A. Of those who were traveling on Airline A, 30 percent had first-class seats. Which of the following statements must be true about the 300 travelers?
Indicate all such statements.
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The standard deviation of the numbers in list K is a number between 12 and 15 inclusive. If a new list is formed by multiplying each number in list K by 3 which of the following values could be the standard deviation of the numbers in the new list?
Indicate all such values.
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In the rectangular coordinate system, the vertices R, S, and T of triangle RST have coordinates (3, 1), (3, 7), and (k, 4), respectively. If k > 3 which of the following must be true?
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