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Past data indicate that the standard deviation of measurements made on sheet metal stampings by experienced inspectors is 0.41 square inch. If a new inspector measures 50 stampings with a standard deviation of 0.49 square inch, use the method of Exercise 7 to test the null hypothesis σ = 0.41 square inch against the alternative hypothesis σ > 0.41 square inch at the 0.05 level of significance.
Exercise 7
This question has been intentionally omitted for this edition
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