A researcher is investigating if adults who smoke more than 2 packs a day get fewer hours of sleep compared to other adults who do not smoke often. He collected a random sample of 35 smokers. The mean of this sample was 10.5 On average, adults that do not smoke often get 12 hours of sleep with a standard deviation of 3 and the distribution is normal. A. Identify the null and alternative hypotheses. Is it a one-tailed or two-tailed test? Briefly explain why the test is one-tailed or two-tailed. B. Compute the z-score for this sample. C. What is the probability
A researcher is investigating if adults who smoke more than 2 packs a day get
fewer hours of sleep compared to other adults who do not smoke often. He
collected a random sample of 35 smokers. The
On average, adults that do not smoke often get 12 hours of sleep with
a standard deviation of 3 and the distribution is normal.
A. Identify the null and alternative hypotheses. Is it a one-tailed or two-tailed test? Briefly
explain why the test is one-tailed or two-tailed.
B. Compute the z-score for this sample.
C. What is the
observed?
Claim : adults who smoke more than 2 packs a day get fewer hours of sleep compared to other adults who do not smoke often
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