Consider the statistics of two sets of o...

Consider the statistics of two sets of observations as follows:
`{:(,"Size", "Mean", "Variance"),("Observation I",10,2,2),("Observation II", n,3,1):}`
If the variance of the combined set of these two observations is `(17)/(9)` then the value of n is equal to....

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Consider the statistics of two sets of observations as follows: `{:(,"Size", "Mean", "Variance"),("Observation I",10,2,2),("Observation II", n,3,1):}` If the variance of the combined set of these two observations is `(17)/(9)` then the value of n is equal to....

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Consider the statistics of two sets of observations as follows:
`{:(,"Size", "Mean", "Variance"),("Observation I",10,2,2),("Observation II", n,3,1):}`
If the variance of the combined set of these two observations is `(17)/(9)` then the value of n is equal to....