8 A consumer advocate analyzes the nicotine content in two brands of cigarettes A random...
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8 A consumer advocate analyzes the nicotine content in two brands of cigarettes A random sample of 20 Brand X cigarettes results in a sample mean nicotine content of 1 68 milligrams with a standard deviation of 22 milligrams A random sample of 25 Brand Y cigarettes results in a sample mean nicotine content of 1 95 milligrams with a standard deviation of 24 milligrams Use this information to construct a 95 confidence interval for the differences in nicotine content between the two brands of cigarettes Interpret your interval i e what exactly does it mean in this case Round to 4 four quality decimal places
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