FAN AND MEDAL
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

Question

FAN AND MEDAL
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

anonymous · Answer

25, 57+19=76
100-76=24

anonymous · Answer

Ok

well if you use ratios...

57 or 76 are yellow... 

so 

57            yellow
---  =      ------
76               100

anonymous · Answer

Now

well make x the subject... then you can calculate an answer... 

but I would suggest you read your notes on experimental probability, it would explain it all.. 

the question, whilst about probability, is an application of ratios.. 

hope it helps

anonymous · Answer

@emma.monsterr , 24 is not up there

anonymous · Answer

It says "the predicted number" its a guess and 25 is up their

anonymous · Answer

thanks emma

anonymous · Answer

Any time!

anonymous · Answer

I said 24 is not up there i see 25.