Imagine that a researcher wanted to know the average weight of 5th grade boys in a high school. He r

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Imagine that a researcher wanted to know the average weight of 5th grade boys in a high school. He randomly sampled 5 boys from that high school. Their weights were: 120 lbs., 99 lbs, 101 lbs, 87 lbs, 140 lbs. What's the standard error of the mean?

9.29839 using our statistics calculator