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1. A drug is reported to benefit 40% of the patients who take it. If 6 patients take the drug, what is the probability that 4 or more patients will benefit?
A. 0.179 B. 0.667 C. 0.862 D. 0.138
2. If a gambler rolls two dice and gets a sum of 10, he wins $10, and if he gets a sum of three, he wins $20. The cost to play the game is $5. What is the expectation of this game?
A. $3.06 B. -$2.78 C. -$3.06 D. $2.78
Additional Information
These multiple choice questions based on the Statistics. The first problem is about a drug with 40% patients benefitting, the probability for 4 or more patients out of 6 is calculated and the 2nd question is about rolling dice.
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