The quality-control manger determines that the piston diameters are…

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Question Answered step-by-step The quality-control manger determines that the piston diameters are… The quality-control manger determines that the piston diameters are normally distributed, with a mean of 0.5 inch and a standard deviation of 0.004 inch. The machine that controls the piston dimeter is recalibrated in an attempt to lower the standard deviation. After recalibration, the quality-control manager randomly selects 25 pistons form the production line and determines that the standard deviation is 0.0025 inch. Was the recalibration effective? Use the a=0.01 level of significance.(Hint: if the recalibration is effective, then it means standard deviation is lower.)a. (2 pts) Write the claim statement in sentence.b. (2 pts) State null and alternate hypothesis.c. (2 pts) Verify the requirements.d. (2 pts) Find P-value. Explain why you should reject or not reject null hypothesis.e. (2 pts) Write the conclusion in sentence. Math Statistics and Probability MATH 302 Share QuestionEmailCopy link Comments (0)

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