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OpenStudy (anonymous):
A set of data items is normally distributed with a mean of 400 and a standard deviation of 60. Find the data item in this distribution that corresponds to the following z-score: z = 3
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jimthompson5910 (jim_thompson5910):
z = (x - mu)/(sigma) 3 = (x - 400)/60 3*60 = x - 400 180 = x - 400 ... ... ... x = ??
OpenStudy (anonymous):
x= 580
jimthompson5910 (jim_thompson5910):
yep
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