Maddy waits tables and has determined that 12% of her tables leave her 12 percent tip, 30% of her tables leave her 15 percent tip, 48% of her tables leave her 18 percent tip, and 10% of her tables leave her 20 percent tip.Fill in the table of values below to find the expected percentage of tips that Maddy receives.

(Enter X as a whole number, P(X) as a decimal with two decimal digits, and X*P(X) as a decimal with two decimal digits)

X₁=________________P(X₁) =______________ X₁*P(X₁) =____________________

X₂=_____________ P(X₂) =______________X₂*P(X₂) =___________________

X₃=_____________ P(X₃) =_______________X₃*P(X₃) =____________________

X₄=_____________ P(X₄) =_______________X₄*P(X₄) =___________________

Maddy's expected percent tip per table is E(X) =________________%