Arizona Municipal Bonds Recently The National Yield On Municipal Bonds Has Been Mean = 4.19%.?

Recently the national yield on municipal bonds has been mean = 4.19%.? - arizona municipal bonds

Studying for an exam ////// /////

A sample of 16 Arizona municipal bonds have an average return of 5.11% with a standard deviation s = 1.15%. Does this indicate that the average share price performance of all municipal bonds is higher in Arizona than the national average? Use a = 0.05. Suppose that X is a normal distribution.

a) State null and alternative hypotheses.
b) Determine the sampling distribution to use: the standard normal distribution or the distribution of T student. Find the critical value (s).
c) Calculate the value of the sample test statistic Zot
d) Determine the P value or an interval with the value of P for statistical sample.
to decide e) about their reactions to the A to D of the base, whether or not to reject the null hypothesis given the level of significance. Explain your conclusion in the context of the problem.