It is specified that a certain type of iron should contain .85 g of silicon per 100 g of iron (.85%). The silicon content of each of 25 randomly selected iron specimens was determined, and the accompanying Minitab output resulted from a test of the appropriate hypotheses.
a. What hypotheses were tested?
b. What conclusion would be reached for a significance level of .05, and why? Answer the same question for a significance level of .10.
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