Stats final spring 2021.pdf (page 6 of 11) ~ V 8. (10 pts) Recently the national average yield on municipal bonds has been A = 4.19%. A random sample of 16 Arizona municipal bonds had an average yield of 5.11% with a sample standard deviation of s = 1.15%. Does this indicate that the population mean yield for all Arizona municipal bonds is greater than the national average? Use a 5% level of significance. Assume x is normally distributed. a. State the null and alternate hypotheses and the level of significance. Is the test left-tailed, right-tailed, or two-tailed? b. Identify the appropriate sampling distribution: the standard normal or the Student's f. What is the value of the sample test statistic? c. Find or estimate the P-value. d. Based on your answers for parts (a) through (c), will you reject or fail to reject the null hypothesis