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In looking over sales generated by 15 offices in his district, a manager noticed that the distribution of sales was right skewed. On a log10 scale, the data were symmetric; so he computed the 95% t-interval for the mean on the log scale. He then raised 10 to the power of the endpoints of the interval to get back to dollars. He claims that this is a 95% confidence interval for mean sales. What do you think?

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