Question

4. distributed, with standard deviation σ-10 hours. A random sample of 15 thermocouples The life in hours of a thermocouple used in furnace is known to be approxi resulted in the following data: 203 99197 211 219 196 197 187 212 219 197 204 193 187 207 Using Zo. Is there evidence to support the claim that mean What is the P-value? a. b. at is the B-value for thi What sample size woul life is 230 hours? is test if the true mean life is 225 hours? d be required to ensure that ß does not exceed 0.10 if the true mean C. d. e. Construct a 95% two-sided lower CI on the mean life. f. Use the CI found in part (e) to test the hypothesis test

Answer 1

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Lu 2o-to ค้า hypoheMs CA Sheae

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at pat Ce〉,-he q5.s aou one gsded contidence bound