When refrigerant lines are installed under a poured concrete slab, they are protected from physical harm:
A) By a covering of tar and pitch
B) By the foam insulation around the refrigerant lines
C) By using a chase or conduit
D) By the concrete itself
C
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The preferred method for checking for damaged conduit before pulling cable is _____.
a. a visual inspection of the conduit b. using a vacuum powered fishing system c. using a conduit swab to clear debris d. performing a test pull
Plant varieties that are selected and sustained for specific attributes are termed ____________________
Fill in the blank(s) with correct word
A certain large shipment comes with a guarantee that it contains no more than 15% defective items. If the proportion of defective items in the shipment is greater than 15%, the shipment may be returned. You draw a random sample of 10 items. Let X be the number of defective items in the sample.
a. If in fact 15% of the items in the shipment are defective (so that the shipment is good, but just barely), what is P(X? 7)? b. Based on the answer to part (a), if 15% of the items in the shipment are defective, would 7 defectives in a sample of size 10 be an unusually large number? c. If you found that 7 of the 10 sample items were defective, would this be convincing evidence that the shipment should be returned? Explain. d. If in fact 15% of the items in the shipment are defective, what is P(X ?2)? e. Based on the answer to part (d), if 15% of the items in the shipment are defective, would 2 defectives in a sample of size 10 be an unusually large number? f. If you found that 2 of the 10 sample items were defective, would this be convincing evidence that the shipment should be returned? Explain.
Extension lines can be used to show the extension of a surface to a theoretical intersection.
Answer the following statement true (T) or false (F)