The scores on a 30-point multiple-choice exam are given in the following frequency table:
The interquartile range on the exam is
A. 2.
B. 2.5.
C. 3.
D. 3.5.
E. none of these
Answer: E
Mathematics
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Find n(A) for the set.A = {x | x is a second in a minute}
A. n(A) = 120 B. n(A) = 60 C. n(A) = 12 D. n(A) = Infinite
Mathematics
Divide. Simplify if possible.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Find the mean, median, and mode. Round to the nearest tenth when necessary.Given these test scores:16.4, 2, 6, 7.3, 14, 16.4, 6, 2, 16.4, 16.4
A. 11.2, 10.65, two modes 6 and 16.4 B. 9.1, 10.65, 6 C. 10.3, 10.65, 16.4 D. 9.1, 10.65, two modes 6 and 16.4
Mathematics
Factor by grouping.12x3 + 20x2 + 3x + 5
A. (4x2 + 1)(3x + 5) B. (4x2 - 1)(3x + 5) C. (4x + 1)(3x + 5) D. (4x2 + 1)(3x - 5)
Mathematics