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Suppose That in One Town,50-Year Old Men Have a Mean

Question 59

Multiple Choice

Suppose that in one town,50-year old men have a mean weight of 80 kg with a standard deviation of 7 kg.30-year old men have a mean weight of 71 kg with a standard deviation of 6 kg.How much heavier do you expect a 50-year old man to be than a 30-year old man and what is the standard deviation of this difference?


A) 80 kg,7 kg
B) 9 kg,3.61 kg
C) 151 kg,4.31 kg
D) 9 kg,9.22 kg
E) 9 kg,13 kg

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