Friday
April 18, 2014

Homework Help: Standard Error Of Mean?

Posted by Help Please? on Monday, April 23, 2012 at 8:43pm.

In a random sample of 30 tires of the same type, it is found that the average life span of a tire is 36,200 miles with a standard deviation of 3,800 miles. Find the standard error of the mean.

a 126.67
b 693.78
c 9.53
d 587.24

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