Calculate the standard deviation of X for the probability distribution. Round your answer to two decimal places if necessary.
x-19-153132230
0.20.10.10.100.5?
__________
Fill in the blank(s) with the appropriate word(s).
20.85
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Solve.An arch in the shape of the upper half of an ellipse is used to support a bridge spanning a creek 40 feet wide. The center of the arch is 10 feet above the center of the creek. What is the height of the arch at a distance 12 feet from the center of the creek?
A. 3 feet B. 8 feet C. 0.8 foot D. 10 feet
Find the sum and simplify the answer.
+ 
A. 
B. 
C. 
D. 
Solve the problem.An experiment was conducted. The results are listed in the following table. 
Use the table to determine which event has the greatest probability of occurring and what the probability of its occurrence is.
A. D; 0.176 B. A; 0.24 C. D; 0.276 D. E; 0.27
Plot the ordered pair. State in which quadrant or on which axis the point lies.(0, -6)
A. x-axis
B. y-axis
C. y-axis
D. quadrant I