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Mathematics, 16.03.2020 19:37 hellion
In a sample of 100 steel canisters, the mean wall thickness was 8.1 mm with a standard deviation of 0.5 mm. Someone says that the mean thickness is less than 8.2 mm. With what level of confidence can this statement be made? (Express the final answer as a percent and round to two decimal places.)
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In a sample of 100 steel canisters, the mean wall thickness was 8.1 mm with a standard deviation of...
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