A cereal manufacturer is concerned that the boxes of cereal not be under filled or overfilled. Each box of cereal is supposed to contain 13 ounces of cereal. A random sample of 31 boxes is tested. The average weight is 12.58 ounces and the standard deviation is 0.25 ounces. Calculate the test statistic to test these hypotheses. a. Specify the null and alternative hypotheses. b. Calculate the value of the test statistic. (Round to two decimal places) c. What is the p-value? (Round to four decimal places) d. At a 5% significance level, the decision is to
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The null hypothesis (H0) is that the mean weight of the cereal boxes is 13 ounces (μ = 13). The alternative hypothesis (H1) is that the mean weight of the cereal boxes is not 13 ounces (μ ≠ 13). b. The test statistic can be calculated using the formula for a Show more…
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