Textile Engineering > GATE 2018 > Probability and Statistics
The standard deviation of population P is two times the standard deviation of population Q. The size of a random sample from population P is four times the size of a random sample from population Q. If eP and eQ denote the standard error of the means of the samples from P and Q, respectively, what is the ratio of eP to eQ?

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standard deviation populations GATE textile engineering 2018 standard error means sample size ratio population standard deviation textile engineering gate standard error ratio sample standard deviation ratio

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