Data shows that 86% of the people in a certain population are right-handed. A group of 7 people from this population are selected at random. (a) What...

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Data shows that 86% of the people in a certain population are right-handed. A group of 7 people from this population are selected at random.(a) What would be the expected value for the number of right-handed people in the group? (b) What is the probability that exactly 5 of the people in the group are right-handed? (c) What is the probability that at least 5 of the people in the group are right-handed?