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According to a survey, 82% of people said they are not satisfied with their life. Assume...

According to a survey, 82% of people said they are not satisfied with their life. Assume the survey meets the conditions of a binomial experiment.

1. In a random survey of 21 students, find the probability that exactly 19 of them said they're not satisfied with their lives.

2. In a random survey of 21 students, find the probability that more than 19 of them would say that aren't satisfied with their lives.
Math   Statistics-And-Probability   
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