According to Data from the American Medical Association, 10% of Us

According to data from the American Medical Association, 10% of us are left-handed. Suppose a group of 500 people is randomly selected. You wish to find the probability that at least 80 are left-handed. Describe the characteristics of this problem which help you to recognize that the problem is about a binomial distribution that you are to solve by estimating with the normal distribution. (Assume that you would not use a computer, a table, or the binomial probability formula.)

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For each person, there are two possible ...

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