A cell phone company orders 600 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.
a. 18 phones
b. 210 phones
c. 26 phones
d. 21 phones
Probability of a defective phone is 3.5%, as a fraction that is 7/200. So it follows:
600 * 7/200 = 4200 / 200 = 21--> Therefore, there is about 21 phones that will be defective.
the answer is d
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