Posted by **toyman** on Friday, July 22, 2011 at 1:56am.

For a random sample of 10 men, the mean head circumference is x = 57.3 cm and the sample standard deviation is s = 2 cm. The standard error of the sample mean is:

a. 0.200

b. 0.447

c. 0.500

d. 0.632

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