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Answer:
<u>630</u> MP3 players are likely to be defective.
Step-by-step explanation:
Given:
A shipment to a warehouse consists of 4500 MP3 players the manager chooses a random sample of 50 MP3 players and finds that 7 are defective.
Now, to find the MP3 players which are likely to be defective.
Let the defective MP3 players be
Total MP3 players = 4500.
In sample of 50 MP3 players 7 are defective.
Now, setting the proportion:
If, 50 is equivalent to 7.
Then, 4500 is equivalent to
Now, to solve using cross multiplication method:
<em>By cross multiplying we get:</em>
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<em>Dividing both sides by 50 we get:</em>
Therefore, 630 MP3 players are likely to be defective.
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➷ The formula for surface area of a cylinder is:
The radius is half the diameter
radius = 8/2 = 4
Substitute the values in:
Solve it:
surface area =
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