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Mathematics, 24.04.2020 03:10 jskdkfjf
Ralphie is taking a ten-question multiple choice test. Each question has five choices. If Ralphie answers a question correctly.
he earns one point; if he answers it incorrectly, he loses a quarter of a point. Ralphie answers the first seven questions
correctly, then guesses on the last three. What is the expected value of his test score? Round the answer to the nearest
whole percent.
A 0%
B. 529
C. 68%
D. 70%
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Answers: 1
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Ralphie is taking a ten-question multiple choice test. Each question has five choices. If Ralphie an...
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