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Mathematics, 12.12.2019 05:31 ryleigh8211
Asample survey is designed to estimate the proportion of sports utility vehicles being driven in the state of california. a random sample of 500 registrations are selected from a department of motor vehicles database, and 48 are classified as sports utility vehicles. (a) use a 95% confidence interval to estimate the proportion of sports utility vehicles in california. (round your answers to three decimal places.) to (b) how can you estimate the proportion of sports utility vehicles in california with a higher degree of accuracy? (hint: there are two answers. select all that apply.) increase za/2 by increasing the confidence coefficient conduct a non-random sample increase the sample size n decrease the sample size n decrease za/2 by increasing the confidence coefficient decrease za/2 by decreasing the confidence coefficient increase za/2 by decreasing the confidence coefficient you may need to use the appropriate appendix table or technology to answer this question.
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