rschaum08
21.04.2020 •
Mathematics
Given are six measurements (in ∘C) of the melting point of a copper sample:
1084.55 1084.89 1085.02 1084.79 1084.69 1084.86
"To access the complete data set, click the link for your preferred software format:Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt!The copper sample is supposed to have melting point of 1084.80∘C. Do the measurements give good evidence that the melting point is not 1084.80 ?The six measurements are an SRS from the population of all results we would get if we kept measuring the melting point of this copper forever. This population has a Normal distribution with mean equal to the true melting point of the copper sample and standard deviation 0.25 . Use this information to carry out a test of significance, following the four‑step process.STATE: Choose which one of the questions gives the best statement of the problem.
a. Is there evidence that the true melting point of the copper sample is greater than 1084.80∘C ?
b. Is there evidence that the true melting point of the copper sample is not 1084.80∘C ?
c. Is there evidence that the true melting point of the copper sample is less than 1084.80∘C ?
d. Is there evidence that the true melting point of the copper sample is 1084.80∘C ?"
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Ответ:
Ответ:
Always true.