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OpenStudy (anonymous):
help!
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OpenStudy (anonymous):
@welshfella
OpenStudy (anonymous):
A bag contains 50 marbles, 10 of which are blue, 8 are red, 20 are green, and 12 are purple. Marcie takes a marble out of the bag, records the color, and returns it to the bag. How many red marbles should she expect after 500 trials? 80 100 120 200
OpenStudy (anonymous):
@welshfella
OpenStudy (anonymous):
@welshfella
OpenStudy (anonymous):
@iambatman
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OpenStudy (anonymous):
please help! :((((
OpenStudy (anonymous):
120?
OpenStudy (welshfella):
probability of choosing a red marble = 8 /50 because the number of marbles in bag = 8 and total number of all marbles = 50
OpenStudy (welshfella):
so number of marbles expected in 500 trials is |dw:1439322127297:dw|
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