7. Cigarette Smoking A re
arette Smoking A researcher found that a cigarette
...
Mathematics, 07.05.2020 02:05 genyjoannerubiera
7. Cigarette Smoking A re
arette Smoking A researcher found that a cigarette
Joker smokes on average 31 cigarettes a day. She
feels that this average is too high. She selected a random
sample of 10 smokers and found that the mean number
of cigarettes they smoked per day was 28. The sample
standard deviation was 2.7. At a= 0.05 is there enough
evidence to support her claim?
Answers: 1
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