Answer:
it's actually 64%
Step-by-step explanation:
Prob ( guessing right) = 0.25 . Get 1 point.
Prob( guessing wrong) = 0.75. Lose 0.5 points.
Expected value = 1(0.25) + (-0.5)(0.75)
= -0.125 answer
Answer:
d
Step-by-step explanation:
don't know how to explain it, not even sure of the answer, but just wait someone will help u out,believe me u will find.
