Approximating Binomial Probabilities In Exercises 2328, determine whether you can use a

Chapter 5, Problem 23

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Approximating Binomial Probabilities In Exercises 2328, determine whether you can use a normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use a binomial distribution to find the indicated probabilities Spam A survey of U.S. adults found that 69% of those who text on cell phonesreceive spam or unwanted messages. You randomly select 100 U.S. adults whotext on cell phones. Find the probability that the number who receive spam orunwanted messages is (a) exactly 70, (b) at least 70, and (c) fewer than 70, and(d) identify any unusual events. Explain. (Source: Pew Research Center)

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