The weight of baby seals is believed to be Normally distributed, with a mean of 69.5 pounds. The average weight of a random sample of 25 baby seals is found to be 69.75 pounds, with a standard deviation of 4.2 pounds. What is the standard error of the mean?
0.84
0.30
0.25
0.17
We are unable to determine the standard error of the mean because we do not know σ.
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