Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20
B. 100
C. 10
D. 500
Answer: C
Mathematics
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j - 2k
A. 
B. 
C. 
D. 
(j - k)
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Perform the operation and reduce to lowest terms.
× 
× 
A. 
B. 
C. 
D. 
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Find the correlation coefficient.The following are the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters): 
A. -0.2105 B. 0 C. 0.2563 D. 0.1955
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Simplify the expression.5 ? 6 - 5
A. 5 B. 150 C. 25 D. 35
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