Tar sand and oil shale extractions are energy and cost efficient processes



Indicate whether the statement is true or false.


F

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A reinforced masonry wall is built like a cavity wall with an air space between the wythes. 

Answer the following statement true (T) or false (F)

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Concrete blocks are produced in lots of 2000. Each block has probability 0.85 of meeting a strength specification. The blocks are independent.

a. What is the probability that, in a given lot, fewer than 1690 blocks meet the specification? b. Find the 70th percentile of the number of blocks that meet the specification. c. In a group of six lots, what is the probability that fewer than 1690 blocks meet the specification in three or more of them?

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According to Ohm’s law, __________.

a. voltage = current/resistance b. current = voltage/resistance c. voltage = resistance/current d. resistance = current ? voltage

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Which tier of emission standards is the least stringent?

A) Tier 2 B) Tier 3 C) Tier 1 D) None of these

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