7 random sampling of the data is taken where each is a sample 6 residents as listed below.

Sample 1:285538464870

Sample 2:621539563832

Sample 3:344756353262

Sample 4:153948441648

Sample 5:541737724726

Sample 6:481656722039

Sample 7:622020562835

1) Compute the values of ??x? and its mean, ?x?? for each sample above.

2) Find the mean of the sample means, ?xs????

3) Compute the standard deviation of the sample means, ?sx??? by first computing the values in the Table below.

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