Question

Homework4: Problem 3 Previous Problem Problem List Next Problem (4 points) 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 15 obituaries from newspapers from rural towns in Idaho give i = 80.47 and s = 1. 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, eg, 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) H : H : (b) Find the test statistic, (c) Answer the question: Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (Use a 10% level of significance) (Type: Yes or No)

Answer 1

Sola mean(x) = 8047 S = 1 Population megn (L) = 77 N = 15 Neld fypothesis I = 77 alfennete typotheses tt, :47 77 © Test - stetistics - Kanal - 80.44-77 = 3,47#175 13.4392 Significace lexel, 15 g /= 1,33 from hormal stand and table critical value = 1.33 P value ao @ geo, this sample provide ewidence that people having rural édi ho Communities live longer than 77yers, in