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4 If the variance of a data = 100, and the data are modified through the equation: y=2kx+30. If the standard deviation of the modified

4 If the variance of a data = 100, and the data are modified through the equation: y=2kx+30. If the standard deviation of the modified data = 100, then the value of k is: * (2 points) 2 10 20 O 5

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