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8.   The business manager of a local health clinic is interested in estimating the difference between...

8.   The business manager of a local health clinic is interested in estimating the difference between the fees for extended office visits in her center and the fees of a newly opened group practice. She gathered the following information regarding the two offices.

Health Clinic

Group Practice

Sample Size

50 visits

45 visits

Sample Mean

$21

$19

Population Standard Deviation

$2.75

$3.00

          Develop a 95% confidence interval estimate for the difference between the average fees of the two offices.

Can this be solved on a calculator?

Math   Statistics-And-Probability   
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