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OpenStudy (anonymous):
In a box of 50 buttons there are three kinds -- wooden, plastic, and shell. You don't know how many of each kind. You reach into the box without looking and grab any button, put it back in the box, and mix them up. You try this over and over again. After 10 trials you find that you have picked a wooden button twice, a plastic button five times, and a shell button three times. Based on these experimental results, how many shell buttons can be estimated to be in the box. 20 shell buttons 10 shell buttons 15 shell buttons 30 shell buttons would it be 15?
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OpenStudy (anonymous):
yea. it should be. 15/50 is 3/10.
OpenStudy (anonymous):
thanks thought so
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