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Question
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.
Answer
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