Solve the problem.A data set consists of 248 test scores. Over a long period it has been found that the mean and standard deviation for these scores are known and that the scores are normally distributed. How many scores within this data set should lie within three standard deviations of the mean? Round your answer to the nearest whole number.
A. 237
B. 247
C. 169
D. 124
Answer: B
Mathematics
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and 
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A. (2, 0)
B. 
C. 
D. (2, ?)
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Solve the system graphically.2x + y = 22x + y = 4
A. 
B. (2, 4)
C. 
D. no solution
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Provide an appropriate response.Give the signs of the three trigonometric functions of the vector with the endpoint (2, 8).
A. sine, negative; cosine, negative; tangent, negative B. sine, negative; cosine, positive; tangent, positive C. sine, positive; cosine, positive; tangent, positive D. sine, positive; cosine, negative; tangent, positive
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Plot the complex number in the complex plane.z = 2
A. 
B. 
C. 
D. 
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