Question

likely to be defective

Answer 1

This is a problem on experimental probability.

The probability from the sample of selecting a faulty MP3 is

$Pr(\text{faulty Mp3)=}\frac{7}{50}$

We can also use this as a guess to how many are likely to be defective from the whole sample.

It will also be ;

$\begin{gathered} \frac{7}{50}\times2000 \\ =280\text{ MP3s} \end{gathered}$

Therefore, 280 MP3s are likely to be defective in the shipment.