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For the following experiment, you can use different flavors of goldfish crackers, or you could use a bag of dry beans that you can mark with a nontoxic marker.

 

Take two boxes of different flavored goldfish crackers and a large paper bag.

  1. Pour one flavor of goldfish crackers into the paper bag.

  2. Remove a large handful of crackers from the bag and count them. Replace the crackers taken out with the same number of a different flavored cracker. Mix well.

  3. Remove another large handful of crackers from the bag. Record the total number of crackers in this handful and the number of these that are of the second flavor.

  4. Use the method in the challenge to estimate the total number of crackers in the bag.

  5. Replace the handful of crackers in step three. Mix well. Repeat steps three and four to get 5 estimates in all.

  6. Find the average of the 5 estimates.

  7. How does the average compare to the total number of crackers in the bag?

 

 

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