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A Manufacturer claims that the average weight of a bar of chocolate is 3.53 ounces. We...

A Manufacturer claims that the average weight of a bar of chocolate is 3.53 ounces. We take a random sample of 18 chocolate bars, and the sample has an average weight of 3.5 ounces, with a standard deviation of .4 ounces. Is there sufficient evidence to claim that the manufacturer is cheating on the weight?

Math   Statistics-And-Probability   
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