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A local band was interested in the average song time for rock bands in the 1990s. They sampled eight different rock bands and found that

A local band was interested in the average song time for rock bands in the 1990s. They sampled eight different rock bands and found that the average time was 3.61 minutes with a standard deviation of 0.39 minutes.

Calculate the 95% confidence interval (in minutes) for the population mean.

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