A random variable X has a mean of 130 and a standard deviation of 16. A random variable Y has a mean of 105 and a standard deviation of 9. If X and Y are independent, approximately what is the standard deviation of X-Y? 25.0 18.4 13.6 5.0 2.6

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A random variable X has a mean of 130 and a standard deviation of 16. A random variable
Y has a mean of 105 and a standard deviation of 9. If X and Y are independent,
approximately what is the standard deviation of X - Y?
25.0
18.4
13.6
5.0
2.6
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Transcribed Image Text:Listen A random variable X has a mean of 130 and a standard deviation of 16. A random variable Y has a mean of 105 and a standard deviation of 9. If X and Y are independent, approximately what is the standard deviation of X - Y? 25.0 18.4 13.6 5.0 2.6 Previous Page Next Page Page 24 of 42
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