Mathematics, 05.01.2021 23:20 littleprinces

The marketing club at school is opening a student store. They randomly survey 50 students about how much money they spend on lunch each day. What is the expected value for a student to spend on lunch each day?
a.)0.27(150,000)+0.73(-35,000)=E(X)
b.)150,000-0.73(35,000)=E(X)
c.)0.27(150,000-35,000)=E(X)
d.)0.27(115,000)+0.73(-35,000)=E(X)

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please answer i’m on a timed test!!!

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