Question 1166864
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Assume that the Weight of the students in your sample enrolled at NSU have an
approximately Normal distribution. 
Find the probability that the mean Weight of your sample selected from the university is (Quantitative variable)
A. Within 2 standard deviations from the mean.
B. More than 1 standard deviation from the mean. 
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I think that both the answers to both questions in the post by @CPhill are incorrect.


They had be correct, if the question would ask about the weight of an individual random student.


But the questions are DIFFERENT: they ask about the mean weight of a sample.
So, the answers should be different.