Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

A marketing committee wanted to estimate the proportion of people under the age of 25 who use an iPhone. They took a random sample of 250 cell phone users under the age of 25 and found that 185 of them used an iPhone. What is the standard error for the proportion of people under 25 who use an iPhone?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!