A sample statistic and margin of error are given. Find the confidence interval likely to contain the population parameter of interest and answer the question.A poll conducted the day before the student-body presidential election at a midwestern university showed that 52.8 percent favored Mario, the rest favoring Yin Ling. The margin of error was 3.6 percentage points. Should Yin Ling have conceded the election?
A. 51% to 54.6%; yes
B. 49.2% to 52.8%; no
C. 49.2% to 56.4%; no
D. 52.8% to 56.4%; yes
Answer: C
Mathematics
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÷ 
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C. 
D. 
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Tell which set or sets the number belongs to: natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers.
A. whole, real B. irrational, real C. integers, real D. rational, real
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Factor by grouping.7x - 77 + xy - 11y
A. (x - 11)(7 + y) B. (x - 11y)(7 + y) C. (y - 11)(x + 7) D. (y - 11)(7x + y)
Mathematics