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The weight of bears in Minnesota follows a normal distribution with a mean of 450 lbs...

The weight of bears in Minnesota follows a normal distribution with a mean of 450 lbs and a standard deviation of 20 lbs.  What is the probability of a bear weighing between 450 and 470 lbs? (Do not round - answer should be to 4 decimals and have a 0 in front of the decimal - so the answer should be in this format: "0.6123")

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