Leakage from underground fuel tanks has been a source of water pollution. In a random sample of 87 gasoline stations, 13 were found to have at least one leaking underground tank.
a. Find a 95% confidence interval for the proportion of gasoline stations with at least one leaking underground tank.
b. How many stations must be sampled so that a 95% confidence interval specifies the proportion to within ±0.03?
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A. 5% to 15% B. 5% to 25% C. 10% to 15% D. 10% to 25%
What is the disadvantage of cold-formed steel (CFS) stud backup for brick veneer as compared with CMU backup?
What will be an ideal response?
The most common examples of a large scale showing the necessary details can be found on ____ installation drawings.
A. cabinet B. door C. window D. plumbing
A compressor that uses an impeller to throw refrigerant from the center outward is a:
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