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for each of the 4 stroke categories, consider a random variable representing the time of a randomly selected swimmer in that category. what is the standard deviation of the sum of the 4 random variables?
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for each of the 4 stroke categories, consider a random variable representing the time of a randomly selected swimmer in that category. what is the standard deviation of the sum of the 4 random variables? responses

User Incutonez
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sd = 1.6726

bc i said so

User Magius
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