Dados os conjuntos A = { 1,2,4,6 ) B = ( 3.4,8 } C = { 3,5,6,9 ) , determine :
a ) ( AUC ) - ( CNA )
b ) ( A - B ) ( B - A )

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.