. A cell phone company orders 300 new phones from a manufacturer. If the probability of a phone being defective is 3.5%, predict how many of the phones are likely to be defective. Round to the nearest whole number.
11 phones
105 phones
13 phones
9 phones

Question

.  A cell phone company orders 300 new phones from a manufacturer. If the probability of a phone being defective is 3.5%, predict how many of the phones are likely to be defective. Round to the nearest whole number. 
   11 phones 
 105 phones 
 13 phones 
 9 phones

anonymous · Answer

since you're given the probability of a defective phone, you find the likely number of defective phones by multiplying by the total number of phones...

300 * 3.5% = 300 * 0.035