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A manufacturer of leather products wanted to test a new machine it has recently bought in comparision to its previously installed machienes. He decided to

A manufacturer of leather products wanted to test a new machine it has recently bought in comparision to its previously installed machienes. He decided to do a hypothesis test with a level of confidence of 0.9, what is his level of significance at each side of the normal distribution, considering that this is a two tailed hypothesis. (write your answer in 2 decimal places)

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