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suppose riley is interested in the cost of a gallon of gas in her state. She finds the cost of a gallon of regular gas

suppose riley is interested in the cost of a gallon of gas in her state. She finds the cost of a gallon of regular gas at 55 randomly selected gas stations and calculates the mean price of gas to be 2.87. The standard error of the mean is 0.04. what is the standard deviation of the samples? Please round your answer to two decimal places

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