NEED ASAP. PLEASE SEE COMMENTS SECTIONS FOR ADDITIONAL INSTRUCTIONS

11. A plumbing contractor obtains 60% of her boiler circulators from a company whose defect rate is 0.005, and the rest from a company whose defect rate is 0.010. What proportion of the circulators can be expected to be defective? If a circulator is defective, what is the probability that it came from the first company?

(A) .0070, .429 (B) .0070, .600 (C) .0075, .500 (D) .0075, .600 (E) .0150, .571

12. The graph below shows cumulative proportions plotted against land values (in dollars per acre) for farms on sale in a rural community.

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