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A popcorn manufacturer claims that the bags of popcorn the factory produces have a mean weight of 6.5 ounces. The popula...


A popcorn manufacturer claims that the bags of popcorn the factory produces have a mean weight of 6.5 ounces. The population standard deviation is known to be 0.22 ounces. A simple random sample of 40 popcorn bags has a mean of 6.7 ounces. Assume a confidence level of α = 0.10. Find the value of the statistic z using. 

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