A filling machine is designed to fill soda bottles with 16 ounces of soda. The distribution for the weight of the bottles is normal. Twenty bottles are selected and weighed. The sample mean is 15.3 ounces and sample standard deviation is 1.5 ounces. Develop a 90% confidence interval for this sample. What can we conclude about this filling process?
14.72 ounces, 15.88 ounces. Since this interval does not contain 16 ounces, the process is not working properly.
Business
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