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Mathematics, 29.07.2020 21:01 mattosmiriah5533
A researcher found that a cigarette smoker smokes on average cigarettes a day. She feels that this average is too high. She selected a random sample of smokers and found that the mean number of cigarettes they smoked per day was . The sample standard deviation was . At , is there enough evidence to support her claim? Assume that the population is approximately normally distributed. Use the critical value method and tables.
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A researcher found that a cigarette smoker smokes on average cigarettes a day. She feels that this a...
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