In a poll conducted by the General Social Survey, 81% of respondents said that their jobs were
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In a poll conducted by the General Social Survey, 81% of respondents said that their jobs were sometimes or always stressful. Two hundred workers are chosen at random.
a. Approximate the probability that 160 or fewer find their jobs stressful.
b. Approximate the probability that more than 150 find their jobs stressful.
c. Approximate the probability that the number who find their jobs stressful is between 155 and 162, inclusive.
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