14.8 The chef of Brewd caf is calculating the cost of baking a cake. He pays $2...

14.8 The chef of Brew’d café is calculating the cost of baking a cake. He pays $2 for sugar, $1.30 for flour, $5.80 for butter, $3.20 for milk, and $10 for labor cost. The past records indicate that 11% of his total costs was for sugar, 4% for flour, 21% for butter, 16% for milk, and the remaining for labor. Does the data indicate that the costs today differ from those of the previous month?