A grab bag contains 12 packages worth $.70 each, 15 packages $.40 cents each, and 25 packages worth $.30 each. What is the expected value if you have to pay $.50 to pick one package at random?
A.-$0.08
B.$0.01
C.$0.47
D.$0.00
i got 47 but i don't know it that is true can someone help me plz.
+6251 N=12+15+25=52P[70c]=1252=313P[40c]=1552=513P[30c]=2552 E=70313+40513+302552−50=−20526≈−$0.08
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+37165 I believ it just means you are PAYING MORE than the expected return....by 8 cents
