Find the proportion of observations of a standard normal distribution that are between the given z-scores.0.11 and 2.11
A. 0.4383
B. 0.4388
C. 0.9388
D. 0.4423
Answer: B
Mathematics
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Estimate the sum or difference by rounding each number to the nearest hundred.
A. 2872 B. 2870 C. 2900 D. 2800
Mathematics
Use graphs to find the set.(-10, 0) ? [-3, 2]
A. (0, 2] B. (-10, -3] C. [-3, 0) D. (-10, 2]
Mathematics
Find the product and simplify. Assume all variables represent nonnegative real numbers.(8
)2
A. 64y
B. 64y2
C. 64
D. 8y2
Mathematics
Find the relative maximum and minimum values and the saddle points if they exist.f(x, y) = e-(x2 + y2 - 8y)
A. Relative maximum = e16, relative minimum = e-16
B. No relative extremum or saddle points
C. Relative maximum = e16
D. Saddle point = 
Mathematics