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An energy bar maker claims that the mean number of grams of carbohydrates in one bar is less than 25.
(a) State the null and alternative hypotheses, and identify which represents the claim,
(b) Describe type I and type II errors for a hypothesis test of the claim,
(c) Explain whether the hypothesis test is left-tailed, right-tailed, or two-tailed,
(d) Explain how you should interpret a decision that rejects the null hypothesis,
(e) Explain how you should interpret a decision that fails to reject the null hypothesis. |
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