9. Mary works in a factory that produces 1,000 telephones each day. When 30 telephones were sampled, it was found that 9 were defective. Estimate how many telephones are defective each day. (1 point) 314 telephones 284 telephones 300 telephones 310 telephones
Determine the ratio of defective telephones ratio = 9/30 ratio = 3/10 3 of 10 telephones are defective
Determine the number of defective telephones each day def telephone = ratio of defective × total production def telephone = 3/10 × 1000 def telephone = 300
