Drew thinks that people living in a rural environment have a healthier lifestyle than other people. He believes the average lifespan in the USA is77years. A random sample of 9obituaries from newspapers from rural towns in Idaho give x=81.74ands=.95. Does this sample provide evidence that people living in rural Idaho communities live longer than77years?

(a) State the null and alternative hypotheses:

(Note: Typemufor the symbol,

e.g.mu1for "the mean is greater than 1",

mu1for "the mean is less than 1",

mu != 1for "the mean is not equal to 1".)

Ho:

HA:

(b) Find the test statistic,

(c) Does this sample provide evidence that people living in rural Idaho communities live longer than77years? Use a10% level of significance.

YesorNo)