After several seasons, buried oil tanks are very subject to water under the oil.
Answer the following statement true (T) or false (F)
True
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If X is an unbiased measurement of a true value 
, and U(X) is a nonlinear function of X, then in most cases U is a biased estimate of the true value 
. In most cases this bias is ignored. If it is important to reduce this bias, however, a bias-corrected estimate is 
. In general the bias-corrected estimate is not unbiased, but has a smaller bias than U(X). Assume that the radius of a circle is measured to be r=3.0 ± 0.1 cm.
a. Estimate the area A, and find the uncertainty in the estimate, without bias correction. b. Compute the bias-corrected estimate of A. c. Compare the difference between the bias-corrected and non-bias-corrected estimates to the uncertainty in the non-bias-corrected estimate. Is bias correction important in this case? Explain.
Technician A says that a defective wheel or axle bearing often makes a growling or rumbling noise. Technician B says that a defective wheel or axle bearing often makes a noise similar to a tire with an aggressive mud or snow design. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Which of the following characteristics best describes a spline curve?
a. Continuous b. Continuously tangent c. Continuously curved d. Continuously tangent and curved
Division 7 contains written description of __________ materials.
Fill in the blank(s) with the appropriate word(s).