5.7.5 In a simple random sample of 200 recent purchasers of a new Make A...
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5.7.5 In a simple random sample of 200 recent purchasers of a new Make A autonwhile 120 said that they were satisfied with postpurchase service. In an independent simple random sample of 250 recent purchasers of a new Make 1 automobile. 180) said that they were satisfied with postpurchase service. If the proportion of satisfied purchasers is actually 0.70 in both populations, what is the probability of observing a difference in - Die large as or larger than that obtained in these surveys? 5.7.5 In a simple random sample of 200 recent purchasers of a new Make A autonwhile 120 said that they were satisfied with postpurchase service. In an independent simple random sample of 250 recent purchasers of a new Make 1 automobile. 180) said that they were satisfied with postpurchase service. If the proportion of satisfied purchasers is actually 0.70 in both populations, what is the probability of observing a difference in - Die large as or larger than that obtained in these surveys
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