Description
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
Explanation & Answer
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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