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The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).
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Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?
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