The consumption of asparagus results in the release of methanethiol andSmethyl thioesters metabolites in the urine. To some people, these metabolites have a very distinctive odor, but others cannot detect the odor ("asparagus anosmia"). How common is asparagus anosmia? In a genetic study aiming to find the genetic markers supporting the phenotype, researchers contacted6909

6909participants in a large scientific cohort and found that4161

4161had asparagusanosmia.

Assuming that the cohort is representative of the American adult population, obtain a90%

90%confidence interval for the true population of Americans with asparagus anosmia. Use technology, for instance, the 1-PropZInt function in the TI graphing calculator or the Statistics / Proportion / 1-sample function (Confidence Interval tab) on CrunchIt!. (Enter your answers rounded to three decimalplaces.)