Refer to the following normal curve, with mean ? and standard deviation ?.
A data value of 30 corresponds to a standardized value of
A. -1.
B. 1.
C. -2.
D. 2.
E. none of these
Answer: C
Mathematics
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Find the interval of convergence of the series.
A. 4 < x < 6 B. 4 ? x < 6 C. x < 6 D. -? < x < ?
Mathematics
Find the apportionment asked for.A small country consists of seven states; there are 160 seats in the legislature that need to be apportioned among the seven states; and the population of each state is shown in the table. 
Find the apportionment for state D using Jefferson's method.
A. 23 B. 25 C. 24 D. 26
Mathematics
Decide whether or not the set is closed under multiplication.{Whole numbers}
A. Closed B. Not closed
Mathematics
Evaluate using substitution.
Mathematics