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4. (15 points) The following data are on the pressure in a torsion spring for several settings between the legs of the spring in a free position. Is there a difference in the pressure for the different settings? Setting Press (ps 1 83 85 2 84 85 85 86 86 87 86 | 87 | 87 | 87 | 88 | 83 | 88 | 88 | 88 | 89 | 90 4 89 90 90 91 5 90 92 Do a hypothesis test and include: (a) State the null and alternative hypothesis (b) Find the rejection region (c) Find your test statistic (d) State your conclusion
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