Refer to the following normal curve, with mean ? and standard deviation ?.
The standard deviation ? =
A. 30
B. 15
C. 10
D. 60
E. none of these
Answer: B
Mathematics
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A. -1 B. i C. -i D. 1
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Solve the problem.Find the best buy. Brand A: 28 oz for $14.28 Brand B: 24 oz for $11.28
A. Brand B B. Brand A C. Not enough information D. Equal value
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Perform the indicated operation and write the answer in lowest terms. - 
+ 
A. - 
B. - 
C. 
D. 
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Tell which set or sets each number belongs to: natural, whole, integer, rational, irrational, real.- 
A. Real, rational B. Real, integer C. Real, irrational D. Real, whole
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