anonymous
  • anonymous
A box contains 100 colored chips; some are yellow and some are green. John chooses a chip at random, records the color, and places it back in the bag. John has recorded 57 yellow chips and 19 green chips. Using these results, what is the predicted number of green chips in the box? 25 43 76 81
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
anyone?
lalaland_lauren
  • lalaland_lauren
What do you think it is?
anonymous
  • anonymous
no idea

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More answers

anonymous
  • anonymous
can i give me the answer please iv been stuck on it for 10 minutes now
lalaland_lauren
  • lalaland_lauren
I can't tell the answer for sure, but think about it. Because John pulled out more yellow than green, then there's probably only a few green chips in the bag.
anonymous
  • anonymous
wait is it 25
anonymous
  • anonymous
he picked 19 + 57 = 76 in total. 19 of them were green. This ratio will be the same for 100 chips in the bag. \[\frac{ 19 }{ 76 }=\frac{ x }{ 100 }\]
anonymous
  • anonymous
yes 25
lalaland_lauren
  • lalaland_lauren
Agree
anonymous
  • anonymous
thank you! can you help me with a few others?
lalaland_lauren
  • lalaland_lauren
Sure, go ahead
anonymous
  • anonymous
Henry tossed a coin several times and recorded the number of heads and tails in the following table: side of coin: heads tails number of tosses for heads: 12 number of tosses for tails: 18 What is the experimental probability of getting heads? 0.4 0.7 1.2 1.8
anonymous
  • anonymous
?
anonymous
  • anonymous
hello??
lalaland_lauren
  • lalaland_lauren
sorry, something happened with my internet and everything went down
lalaland_lauren
  • lalaland_lauren
But basically, since there were 30 flips of the coin in all, you have to divide the number of tries with heads vs total number of tries, like peachpi said earlier
lalaland_lauren
  • lalaland_lauren
so your answer ends up being 0.4

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