1.

In an experiment with 250 trials, the first 150 trials has mean 16 and standard deviation 4. The overall experiment has mean 15.6 and variance 13.44.The standard deviation of the next 100 trials of given experiment is

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In an experiment with 250 trials, the first 150 trials has mean 16 and standard deviation 4. The overall experiment has mean 15.6 and variance 13.44.The standard deviation of the next 100 trials of given experiment is



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