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1. From previous polls, it is believed that 66% of likely voters prefer the incumbent. A new poll of 500 likely voters will be conducted. In the new poll, if the proportion favoring the incumbent has not changed, what is the mean and standard deviation of the number preferring the incumbent?
A. μ = 330, σ = 10.59B. μ = 0.66, σ = 0.021C. μ = 330, σ = 18.17
2. From previous polls, it is believed that 66% of likely voters prefer the incumbent. A new poll of 500 likely voters will be conducted. In the new poll, if the proportion favoring the incumbent has not changed, what is the probability that more than 68% will favor the incumbent?
A. 32%B. 82.7%C. 17.1%
3. It has been asserted that 15% of all people are left-handed. In a random group of 10 people, what is the chance that not all of them are right-handed?
A. 85%B. 80.3%C. 100%
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