Lois thinks that people living in a rural environment have a healthier lifestyle than other people. She believes the average lifespan in the USA is 77 years. A random sample of 12 obituaries from newspapers from rural towns in Idaho give ?¯=81.62x¯=81.62 and ?=1.14s=1.14. Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (a) State the null and alternative hypotheses: (Type "mu" for the symbol ?μ , e.g. mu >>1 for the mean is greater than 1, mu << 1 for the mean is less than 1, mu not = 1 for the mean is not equal to 1. Do not worry about the equality for the "greater than or equal to" or the "less than or equal to" statements) ?0H0 : ??Ha : (b) Find the test statistic, t = (c) Answer the question: Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (Use a 0.1 level of significance) (Type: Yes or No)
Lois thinks that people living in a rural environment have a healthier lifestyle than other people. She believes the average lifespan in the USA is 77 years. A random sample of 12 obituaries from newspapers from rural towns in Idaho give ?¯=81.62x¯=81.62 and ?=1.14s=1.14. Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years?
(a) State the null and alternative hypotheses:
(Type "mu" for the symbol ?μ , e.g. mu >>1 for the mean is greater than 1, mu << 1 for the mean is less than 1, mu not = 1 for the mean is not equal to 1. Do not worry about the equality for the "greater than or equal to" or the "less than or equal to" statements)
?0H0 :
??Ha :
(b) Find the test statistic, t =
(c) Answer the question: Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (Use a 0.1 level of significance)
(Type: Yes or No)
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