Boxes of cereal are labeled as containing 14 ounces. Following are the weights, in ounces, of a
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Boxes of cereal are labeled as containing 14 ounces. Following are the weights, in ounces, of a sample of 12 boxes: It is reasonable to assume that the population is approximately normal.
a. Construct a 98% confidence interval for the mean weight.
b. The quality control manager is concerned that the mean weight is actually less than 14 ounces. Based on the confidence interval, is there a reason to be concerned?
Explain.
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