The utility of mobile devices raises new questions about the intrusion of work into personal life. I n a survey by CareerJournal.com (data extracted from P. Kitchen, "Can't Turn It Off," Newsday, October 20, 2006, pp. F4-F5), 158 of 473 employees responde

The utility of mobile devices raises new questions

about the intrusion of work into personal life. I n a survey by

CareerJournal.com (data extracted from P. Kitchen, "Can't

Turn It Off," Newsday, October 20, 2006, pp. F4-F5), 158

of 473 employees responded that they typically took work

with them on vacation, and 85 responded that there are

unwritten and unspoken expectations that they stay connected

during vacation.

a. Construct a 95% confidence interval estimate for the

population proportion of employees who typically take

work with them on vacation.

b. Construct a 95% confidence interval estimate for the

population proportion of employees who said that there

are unwritten and unspoken expectations that they stay

connected during vacation.

c. Interpret the intervals in (a) and (b).

d. Explain the difference in the results in (a) and (b).