When grid shorepower electricity is referenced in the context of a truck stop, which of the following would properly describe it?
A. 12 V-DC 25 amp supply
B. 24 V-DC 50 amp supply
C. 120 V-AC, 60 cycle, 20 amp supply
D. 220 V-AC, 60 cycle, 200 amp supply
Answer: C
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a. 2 c. 5 b. 4 d. 6
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Six measurements were made of the concentration (in percent) of ash in a certain variety of spinach. The sample mean was 19.35 and the sample standard deviation was 0.577. Assume that the concentrations are normally distributed.
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