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A sample of 14 joint specimens of a particular type gave a

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A sample of 14 joint specimens of a particular type gave a sample mean proportional limit stress of 8.48 MPa and a sample standard deviation of 0.79 MPa. Calculate and interpret a 95% confidence interval for the true average proportional limit stress of all such joints. What, if any, assumptions must you make in order to perform this calculation?

Reference no: EM13613871

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