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Approximating Binomial Probabilities In Exercises 19-26, determine whether you can use a
22. Online Account Passwords A survey of U.S. adults found that 39% of those who have online accounts use the same or very similar passwords for many of their accounts. You randomly select 500 U.S. adults who have online accounts. Find the probability that the number who use the same or very similar passwords for many of their accounts is (a) exactly 175, (b) no more than 225, and (c) at most 200. (Source: Pew Research Center)
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Chapter 5 Solutions
Elementary Statistics: Picturing the World (7th Edition)
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