No crane or other heavy equipment should be operated within ____ feet of energized electrical transmission lines.
A. 25
B. 20
C. 15
D. 10
Answer: D
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Explain the continuous feature modifier.
What will be an ideal response?
A sample of 87 glass sheets has a mean thickness of 4.20 mm with a standard deviation of 0.10 mm.
a. Find a 98% confidence interval for the population mean thickness. b. What is the level of the confidence interval (4.185, 4.215)? c. How many glass sheets must be sampled so that a 98% confidence interval will specify the mean to within ±0.015?
When raising a steel stud wall, temporary bracing should be placed every _____
a. 2' to 3' b. 4' to 5' c. 5' to 6' d. 8' to 12'
What is the difference between a steam boiler and a hot water boiler?
A) Steam boilers are used to superheat the steam produced by a hot water boiler B) A hot water boiler does not actually boil the water C) The steam created by a hot water boiler is vented to the air D) Hot water boilers do not heat the water over 212°F