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You may need to use the appropriate appendix table or technology to answer this question. A production process is checked periodically by a quality control inspector. The inspector selects simple random samples of 40 finished products and computes the sample mean product weights x. If test results over a long period of time show that 5% of the x values are over 2.1 pounds and 5% are under 1.9 pounds, what are the mean and the standard deviation (in lb) for the population of products produced with this process? (Round your answer for the standard deviation to two decimal places.)

mean lb

standard deviation lb

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