Mathematics, 21.04.2020 20:24, triciajfive
The mean time required to repair breakdowns of a certain copying machine is 93 minutes. The company which manufactures the machines claims that breakdowns of its new, improved model are easier to fix. To test this claim, sample of 73 breakdowns of the new model were observed, resulting in a mean repair time of 88.8 minutes and a standard deviation of 26.6 minutes. Use significance level α = 0.05. State clearly what are your null and alternative hypothesis, show your work, and state your conclusion.
Answers: 3
Mathematics, 21.06.2019 17:30, iliketurtures
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Mathematics, 21.06.2019 20:00, lucerogon7403
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Answers: 3
The mean time required to repair breakdowns of a certain copying machine is 93 minutes. The company...
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