Browsing on the mobile device, a 2012 survey of 2,254 American adults indicates that 17% of cell phone owners do their browsing on their phone rather than a computer or other device.

(a) According to an online article, a report from a mobile research company indicates that 38 per- cent of Chinese mobile web users only access the internet through their cell phones.48 Conduct a hypothesis test to determine if these data provide strong evidence that the proportion of Americans who only use their cell phones to access the internet is different than the Chinese proportion of 38%.

(b) Interpret the p-value in this context.

(c) Calculate a 95% confidence interval for the proportion of Americans who access the internet on their cell phones, and interpret the interval in this context.

Answer rating: 100% (QA)

a H 0 p 038H A p 038 Independence random sample 10 of population and the successfailure condition ar... View the full answer