Katie 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 17 obituaries from newspapers from rural towns in Idaho give = = 80.63 and 8 = 0.87. 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 , e.g. mu >1 for the mean is greater than 1, mu