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Mathematics, 27.11.2019 00:31 jerria73
Suppose that an automotive insurance agent wants to use a confidence interval to estimate the proportion of his clients, p who text while driving. he takes a random sample of 36 clients and discovers that 9 admit to texting while driving. what procedure should the insurance agent use to construct a 95% confidence interval to estimate the proportion of all clients who text while driving, p?
(a) a plus four confidence interval should be used because the sample size is at least 10 and the confidence level is at least 90%.
(b) a large-sample confidence interval should be used because the sample includes at least 15 failures
(c) a large-sample confidence interval should be used because the sample size is at least 30.
(d) a plus four confidence interval should be used because the sample size is at least 30.
(e) a large-sample confidence interval should be used because the sample size is at least 10 and the confidence level is at least 90%.
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