Question

11. a. Three boxes A, B and C contains electric bulbs of which some are defective. The proportiu
defectives is 0.5, 0.125 and 0.75 respectively. A box is selected at random and a bulbis
from it. It is found to be defective. What is the probability that it is drawn from B?
b. The probability that an IC chip will have defective etching is o 12and the
probability that it will have a crack defect is 0.29. The probability that it has
both defects is 0.07. What is the probability that a newly manufactured chip
will have
either an etching or crack defect.
Neither defects
Q
Q​

Answer 1

As you can see, copper is the preferred metal for electrical wires for several reasons. It has high electrical conductive; it's inexpensive; it's ductile; and it's thermal resistant. This makes is the universally accepted standard for the manufacturing of electrical wires.