A survey is designed to estimate the proportion of sports utility vehicles (SUVs) being driven in...

A survey is designed to estimate the proportion of sports utility vehicles (SUVs) being driven in the state of California. A random sample of 500 registrations are selected from a Department of Motor Vehicles database, and 26 are classified as SUVs.

(a)Use a 95% confidence interval to estimate the proportion of sports utility vehicles in California. (Round your answers to three decimal places

(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 the sample size n increase z_α/2 by decreasing the confidence coefficient conduct a non-random sample increase z_α/2 by increasing the confidence coefficient decrease z_α/2 by increasing the confidence coefficient decrease the sample size n decrease z_α/2 by decreasing the confidence coefficient

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orchestra answered 2 years ago

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