2. + 0/2 points Previous Answers MendStat14 8.E.037. & M A sample survey is designed to estimate the proportion of sports utility vehicles being driven in the state of California. A r sample of 500 registrations are selected from a Department of Motor Vehicles database, and 92 are classified as sports ut vehicles. (a) Use a 95% confidence interval to estimate the proportion of sports utility vehicles in California. (Round your ar to three decimal places.) to (b) How can you estimate the proportion of sports utility vehicles in California with a higher degree of accuracy? ( There are two answers. Select all that apply.) decrease the sample size n O decrease Za/2 by increasing the confidence coefficient O increase the sample size n increase z /2 by increasing the confidence coefficient decrease z /2 by decreasing the confidence coefficient increase za/2 by decreasing the confidence coefficient O conduct a non-random sample You may need to use the appropriate appendix table or technology to answer this question. Need Help? Read It Talk to a TutorResearchers wanted to know if blood type was independent of getting Covid. OA. ANOVA OB. chi-square goodness-of-fit with a proportional model OG. binomial test OD. chi-square contingency test\f