A national real estate company just acquired a smaller firm with 150 offices and 6000 agents in Los Angeles and other parts of Southern California. The national firm conducted a sample survey to learn about attitudes and other characteristics of its new employees. In a sample of eight offices, all of the agents completed the questionnaire. Results of the survey for the eight offices follow.

a. Estimate the mean age of the agents.
b. Estimate the proportion of agents who are college graduates and the proportion who are male.
c. Develop an approximate 95% confidence interval for the mean age of the agents.
d. Develop an approximate 95% confidence interval for the proportion of agents who are college graduates.
e. Develop an approximate 95% confidence interval for the proportion of agents who are male.

Transcribed Image Text:

al n 42782676 121 12 le u 34888205 Id I 31 g 7260125 e.. 3333453 75663287 1326 41 45 i 12345678