Find mean & margin of error if 28.4 < µ < 38.8
Mean =28.4+38.82=33.6= \frac{28.4+38.8}{2}=33.6=228.4+38.8=33.6
Margin of error =38.8−28.42=5.2= \frac{38.8 -28.4}{2} = 5.2=238.8−28.4=5.2
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