Refer to a normal distribution described by the following figure. The mean is ? and the standard deviation is ?.
Approximately 84% of the data lies below
A. 130.
B. 210.
C. 154.
D. 112.
E. none of these
Answer: A
Mathematics
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Use the integral test to determine whether the series converges.
A. diverges B. converges
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Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(-6x2)-1
A. 
B. 
C. - 
D. - 
Mathematics
Use interval notation to express the inequality shown in the graph.
A. (-?, 6) B. (-9, 6] C. [-9, 6) D. [-9, 6]
Mathematics
Use your calculator to approximate the integral using the method indicated, with n = 100. Round your answer to four decimal places.
dx (trapezoidal rule)
A. 5.2377 B. 5.3497 C. 5.2877 D. 5.2290
Mathematics