Estimate the population mean

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The following exercises require the use of a computer and software. The answers may be calculated manually. See Appendix A for the sample statistics. A survey of 400 statistics professors was undertaken. Each professor was asked how much time was devoted to teaching graphical techniques. We believe that the times are normally distributed with a standard deviation of 30 minutes. Estimate the population mean with 95% confidence.

Reference no: EM132942741

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