Wireless only. Are customers giving up their landlines and relying on wireless for all of their phone needs? Surveys have collected data to answer this question.27 In June 2006, 10.5% of households were wireless only. Assume that this survey is based on sampling 15,000 households.
(a) Convert the percent to a proportion. Then use the proportion and the sample size to find the count of households who were wireless only.
(b) Find a 95% confidence interval for the proportion of households that were wireless only in June 2006.