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(See) The standard deviation of measurements made on the thickness of rubber coating by all experienced inspectors is 0.76 inch. If an inspector with less

Question: The standard deviation of measurements made on the thickness of rubber coating by all experienced inspectors is 0.76 inch. If an inspector with less experience measures 25 coatings with a standard deviation of 0.85 inch, test at the 1 percent level of significance whether the inspector is making satisfactory measurements. That is, is this Inspector's standard deviation more than the experienced inspectors' standard deviation?

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