Question

A research group conducted an extensive survey of 2873 wage and salaried workers on issues ranging from relationships with their bosses to household chores. The data were gathered through hour-long telephone interviews with a nationally representative sample. In response to the question, "What does success mean to you?" 1502 responded, "Personal satisfaction from doing a good job." Let pbe the population proportion of all wage and salaried workers who would respond the same way to the stated question. Find a 90% confidence interval for p. (Round your answers to three decimal places.)

lower limit
upper limit

Answer 1

p = 1502 / 2873 = 0.523

n = 2873

Z for 90% confidence interval = Z_0.05 = 1.645

Confidence interval

                               

                               

                                = (0.508 , 0.538)

lower limit = 0.508

uppper limit = 0.538