anonymous
  • anonymous
A cell phone company orders 500 new phones from a manufacturer. If the probability of a phone being defective is 2.6%, predict how many of the phones are likely to be defective. Round to the nearest whole number. A. 16 phones B. 130 phones C. 13 phones D. 11 phones
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
2.6% of the phones are deffective, can you work out 2.6 of 500?
anonymous
  • anonymous
How would I do that?
anonymous
  • anonymous
To work out a percentage of a number you do \[number \times \frac{ percentage }{ 100 }\]

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More answers

anonymous
  • anonymous
13 phones.
anonymous
  • anonymous
Correct
anonymous
  • anonymous
What about this one, it's the same just without a percentage.
anonymous
  • anonymous
In a batch of 890 calculators, 12 were found to be defective. What is the probability that a calculator chosen at random will be defective? Write the probability as a percent. Round to the nearest tenth of a percent if necessary.
anonymous
  • anonymous
A. 98.7% B. 1.3% C. 74% D. 1.8%
anonymous
  • anonymous
So 12 out of 890 are defective. 12/890
anonymous
  • anonymous
I got 0.013 in my calc.
anonymous
  • anonymous
So 13?
anonymous
  • anonymous
Wait. whoops. looking at the first questions answers lmfao
anonymous
  • anonymous
so, 1.3?
anonymous
  • anonymous
0.013 is the probability that you will get a defective one. To turn this into a percentage you multiply this by 100.
anonymous
  • anonymous
Yep. I got 1.3 :D
anonymous
  • anonymous
well done
anonymous
  • anonymous
I get this now. But can I do one more ?
anonymous
  • anonymous
Yes
anonymous
  • anonymous
You have the numbers 1-24 written on slips of paper. if you choose one slip at random, what is the probability that you will not select a number which is divisible by 3? A. 2/3 B. 3/8 C. 1/3 D. 5/8
anonymous
  • anonymous
Which numbers between 1 and 24 are divisible by 3? Well 3,6,9,12,15,18,21,24. So any of these 8 numbers out of the 24 will do the job
anonymous
  • anonymous
So we could use 24 then?
anonymous
  • anonymous
3x8 = 24
anonymous
  • anonymous
So b, 3/8?
anonymous
  • anonymous
Was wrong. :p
anonymous
  • anonymous
No actually, 8 out of 24 is not 3/8
anonymous
  • anonymous
Yeah that was my fault.
texaschic101
  • texaschic101
8/24 = 1/3

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