Company XYZ 's Oustanding bonds have a $1.000 par value and they mature in 25 years. Their nominal yield to maturity is 9.41 percent, they pay interest semiannually, and they sell at a price of $850. What is the bond's annual coupon interest rate Multiple Choice 4.13 75786 7491 Question 5 2.5 pts The marketing manager of a branch office of a local telephone operating company wants to study the characteristics of residential customers served by her office. In particular, she wants to estimate the mean monthly cost of calls within the local calling region. In order to determine the sample size necessary, she needs an estimate of the standard deviation. On the basis of her past experience and judgment, she estimates that the standard deviation is equal to $12. Suppose a small scale study of 15 residential customers a sample standard deviation of $9.25. At the 0.10 level of significance, is there evidence that the population standard deviation is different from $12? The lower and upper limits of the decision rule are (-1.96,1.96) (-1.76,1.76) (-2.58,2.58) (-1.65,1.65) Question 5 2.5 pts The marketing manager of a branch office of a local telephone operating company wants to study the characteristics of residential customers served by her office. In particular, she wants to estimate the mean monthly cost of calls within the local calling region. In order to determine the sample size necessary, she needs an estimate of the standard deviation. On the basis of her past experience and judgment, she estimates that the standard deviation is equal to $12. Suppose a small scale study of 15 residential customers a sample standard deviation of $9.25. At the 0.10 level of significance, is there evidence that the population standard deviation is different from $12? The lower and upper limits of the decision rule are (-1.96,1.96) (-1.76,1.76) (-2.58,2.58) (-1.65,1.65)