The distribution of weights of the dogs in a certain park has a mean of 15.3 kilograma. The weight of one of the dogs is 25.4 kilograms, which is 1.4 standard deviations above the mean. Which of the following is closest to the standard deviation, in kilograms, of the distribution of weights of the doga? 6.5 7.2 8.4 9.3 10.2

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