I need help finding the null and alternative hypothesis and t- statistic for this as well!

(15 points) Ben thinks that people living in a rural environment have a healthier lifestyle than other people. He believes the average lifespan in the USA is 77 years. A random sample of 15 obituaries from newspapers from rural towns in Idaho give 5c = 81.43 and s = 1.13. 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 pt , e.g. mu >1 for the mean is greater than 1, mu