\f5. (5 points) Strands of copper wire from a manufacturer are analyzed for strength and conductivity. The results from 100 strands are as follows: Strength High Low High conductivity 74 8 Low conductivity 15 13 If a strand is randomly selected, what is the probability that its conductivity is high and its strength is high?7. , (5 points) A lot of 100 semiconductor chips contains 20 that are defective. a." Two are selected, at random, without replacement, from the lot. Determine the probability that the second chip selected is defective. b. Three are selected, at random, without replacement, from the lot. Determine the probability that all are defective.6. (5 points) A computer system uses passwords that contain exactly eight characters, and each character is one of the 26 lowercase letters (a-z) or 26 uppercase letters (A-Z) or 10 integers (0- 9). Let Q denote the set of all possible passwords. Suppose that all passwords in ? are equally likely. Determine the probability that the password contains only even numbers given that it contains all numbers