Question

An electronics retailer receives a shipment of 6,000CDs to distribute to its stores. A quality control manager inspects a random sample of 40 CDs and finds that 2 are defective. How many CDs in the shipment are likely to be defective? Show your work

Answer 1

Answer: 300

Step-by-step explanation:

Given , An electronics retailer receives a shipment of 6,000CDs to distribute to its stores.

i.e, Total CD's he has now = 6,000

Also, a quality control manager inspects a random sample(S) of 40CD's , the number of defective(D) CD's are 2.

Then , the proportion of defective( D) CD's = $\dfrac{D}{S}=\dfrac{2}{40}=0.05$

Now , the number of CDs in the shipment are likely to be defective = ( Total CD's) x (proportion of defective CD's)

= 6000 x 0.05

=300

Hence, the number of CDs in the shipment are likely to be defective  =300

Answer 2

Answer:

heh

Step-by-step explanation: