Amanufacturer obtains clock-radios from three different subcontractors: 40% from a, 30% from b, and 30% from c. the defective rates for these subcontractors are 5%, 5 %, and 3% respectively. if a defective clock-radio is returned by a customer, what is the probability that it came from subcontractor a? from b? from c? the probability that it came from subcontractor a is 0.455. (type a decimal. round to three decimal places if needed.) the probability that it came from subcontractor b is 0.341. (type a decimal. round to three decimal places if needed.) the probability that it came from subcontractor c is 0.205. (type a decimal. round to three decimal places if needed.)