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#### chisigma

##### Well-known member

- Feb 13, 2012

- 1,704

*A variable of two populations has a mean of 7.9 and a standard deviation of 5.4 for one of the populations and a mean of 7.1 and a standard deviation of 4.6 for the other populations Can you conclude that the variable x1-x2 is normally distributed and why?...*

How to answer to Frida?...

Kind regards

$\chi$ $\sigma$