3,600 ÷ 40 =
A) 9 B) 900 C) 99 D) 90
D
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What system on a hybrid vehicle recovers the energy used to brake by converting rotational energy into electrical energy?
What will be an ideal response?
Technician A says that engine block cylinders are measured for taper. Technician B says that the piston rings typically cause the most wear in the middle of the cylinder. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
What circuit would change the reference level of an ac signal?
A) A clamper B) A clipper C) A limiter D) None of the above
The article “Traps in Mineral Valuations—Proceed With Care” models the value (in millions of dollars) of a mineral deposit yet to be mined as a random variable X with probability mass function p(x) given by p(10)=0.40, p(60)=0.50, p(80)=0.10, and p(x)=0 for values of x other than 10, 60, or 80.
a. Is this article treating the value of a mineral deposit as a discrete or a continuous random variable?
b. Compute 
.
c. Compute 
.
d. The project will be profitable if the value is more than $50 million. What is the probability that the project is profitable?