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OpenStudy (anonymous):
@ganeshie8 The table shows the results of drawing one marble from a bag of colored marbles. Each marble was replaced after the outcome was recorded. If there are a total of 50 marbles in the bag, about how many of the marbles are green? Color Number of Pulls red 6 green 4 orange 7 black 3 A. 20 B. 8 C. 10 D. 4
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OpenStudy (anonymous):
is it C
OpenStudy (anonymous):
@amistre64
OpenStudy (anonymous):
@ganeshie8 am i right
ganeshie8 (ganeshie8):
Correct !
ganeshie8 (ganeshie8):
probability of green marble = 4/20 = 1/5
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ganeshie8 (ganeshie8):
So expected value = 50*1/5 = 10
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