Cigarette Smoking A researcher found that a cigarette smoker smokes on average 29 cigarettes a day. She feels that this average is too low. She selected a random sample of 12 smokers and found that the mean number of cigarettes they smoked per day was 30. The sample standard deviation was 2.6. At α=0.05, is there enough evidence to support her claim? Assume that the population is approximately normally distributed. Use the critical value method and tables. a. State the hypotheses and identify the claim H0= (claim or not claim) H1= (claim or not claim) This hypothesis test is a (one tailed or two tailed) test Critical value(s)= t= (Reject or do not reject) the null hypothesis is there enough evidence to support the claim?
Cigarette Smoking A researcher found that a cigarette smoker smokes on average 29 cigarettes a day. She feels that this average is too low. She selected a random sample of 12 smokers and found that the mean number of cigarettes they smoked per day was 30. The sample standard deviation was 2.6. At α=0.05, is there enough evidence to support her claim? Assume that the population is approximately
a. State the hypotheses and identify the claim
H0= (claim or not claim)
H1= (claim or not claim)
This hypothesis test is a (one tailed or two tailed) test
Critical value(s)=
t=
(Reject or do not reject) the null hypothesis
is there enough evidence to support the claim?
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