To schedule appointments better, the office manager for an ophthalmologist wants to estimate theaverage time that the doctor spends with each patient. A random sample of 49 is taken, and the samplemean is 20.3 minutes. Assume that the office manager knows

To schedule appointments better, the office manager for an ophthalmologist wants to estimate theaverage time that the doctor spends with each patient. A random sample of 49 is taken, and the samplemean is 20.3 minutes. Assume that the office manager knows

To schedule appointments better, the office manager for an ophthalmologist wants to estimate theaverage time that the doctor spends with each patient. A random sample of 49 is taken, and the samplemean is 20.3 minutes. Assume that the office manager knows from past experience that the standarddeviation is 14 minutes. She finds that a 95% confidence interval is between 18.3 and 22.3 minutes. Whatis the point estimate of the population mean, and what is the confidence coefficient?


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