Engineers of a company are testing the pressure amount (in psi) that a certain component of a rotary system can tolerate. For this purpose, they pressure-tested 10 components and the maximum tolerated pressure before they break are as follows:

202

212

196

205

210

188

192

199

201

198

The engineers' claim is that the mean tolerated pressure for this component is at least 195 psi.

1. Can you support the engineers' claim regarding this component? Use the test statistic method to test your hypothesis. Use = 0.05.
2. Explain how the question is part 1 can be answered by constructing a confidence interval on the mean tolerated pressure.

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