O www.webassign.net sub 13% a Search in Five hundred fifteen (515) homes in a ce

Question

O www.webassign.net sub 13% a Search in Five hundred fifteen (515) homes in a certain southern California community are randomly surveyed to determine if they meet minimal earthquake preparedness recommendations. One hundred seventy-five (175) of the homes surveyed met minimum recommendations for earthquake preparedness and 340 did not. the Find the point estimate for the population proportion of homes that do not meet the minimum recommendations for earthquake preparedness. (Round your answer to four decimal places.) 1326 My Notes 27. -12 points Five hundred twetve (512) homes in a certain southern Callfornia community are randomly surveyed to determine if they meet minimal earthquake preparedness recommendations. One hundred seventy-eight (178) of the homes surveyed met the minimum recommendations for earthquake preparedness and 334 did not. Find the confidence interval at the 90% confidence level for the true population proportion of southern California community homes meeting at least the minimum recommendations for earthquake preparedness. (Round your answers to three decimal places.) 1130 PM Ads21

Explanation / Answer

point estimate, p = 340/515 = 0.6602

n = 515

Proportion of homes meet the minimum requirement, p = 178/515 = 0.3477

z-value of 90% CI = 1.6449

SE = sqrt(p*(1-p)/n) = 0.02099

ME = z*SE = 0.03452

Lower Limit = p - ME = 0.31314

Upper Limit = p + ME = 0.38217

90% CI (0.3131 , 0.3822 )

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