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In: Statistics and Probability

for a final exam in statistics , the mean of the exam scores is u= 75...

for a final exam in statistics , the mean of the exam scores is u= 75 with a standard deviation of o=8. what sample mean marks the top 10% of this distribution for a samples of n= 25
b) what sample means mark the boundaries of the middle 50% for samples of n= 50

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