A sample containing years to maturity and yield for 40 corporate bonds are contained in the data given below. Years to Maturity Yield Years to Maturity Yield 27.75 6.075 5.00 6.888 10.50 5.966 10.50 3.477 18.50 4.444 8.00 2.893 13.50 5.569 18.50 4.945 2.75 7.673 5.50 1.991 10.00 6.969 26.50 1.320 13.50 2.956 21.25 1.867 2.75 2.241 13.25 2.189 24.25 0.916 11.75 7.499 1.75 5.323 25.75 5.686 10.25 1.720 13.50 5.195 16.75 3.987 20.00 1.710 22.50 6.405 27.00 1.121 21.25 4.456 1.25 4.146 23.75 2.725 6.25 7.115 8.75 5.497 5.25 1.211 27.75 6.392 4.50 5.998 24.00 0.989 9.00 2.458 15.00 6.169 8.00 1.162 29.00 5.105 8.75 4.978 a. What is the sample mean years to maturity for corporate bonds and what is the sample standard deviation? Mean (to 4 decimals) Standard deviation (to 4 decimals) b. Develop a 95% confidence interval for the population mean years to maturity. Round the answer to four decimal places. c. What is the sample mean yield on corporate bonds and what is the sample standard deviation? Mean (to 4 decimals) Standard deviation (to 4 decimals) d. Develop a 95% confidence interval for the population mean yield on corporate bonds. Round the answer to four decimal places.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
A sample containing years to maturity and yield for 40 corporate bonds are contained in the data given below.
| Years to Maturity | Yield | Years to Maturity | Yield | |||
|---|---|---|---|---|---|---|
| 27.75 | 6.075 | 5.00 | 6.888 | |||
| 10.50 | 5.966 | 10.50 | 3.477 | |||
| 18.50 | 4.444 | 8.00 | 2.893 | |||
| 13.50 | 5.569 | 18.50 | 4.945 | |||
| 2.75 | 7.673 | 5.50 | 1.991 | |||
| 10.00 | 6.969 | 26.50 | 1.320 | |||
| 13.50 | 2.956 | 21.25 | 1.867 | |||
| 2.75 | 2.241 | 13.25 | 2.189 | |||
| 24.25 | 0.916 | 11.75 | 7.499 | |||
| 1.75 | 5.323 | 25.75 | 5.686 | |||
| 10.25 | 1.720 | 13.50 | 5.195 | |||
| 16.75 | 3.987 | 20.00 | 1.710 | |||
| 22.50 | 6.405 | 27.00 | 1.121 | |||
| 21.25 | 4.456 | 1.25 | 4.146 | |||
| 23.75 | 2.725 | 6.25 | 7.115 | |||
| 8.75 | 5.497 | 5.25 | 1.211 | |||
| 27.75 | 6.392 | 4.50 | 5.998 | |||
| 24.00 | 0.989 | 9.00 | 2.458 | |||
| 15.00 | 6.169 | 8.00 | 1.162 | |||
| 29.00 | 5.105 | 8.75 | 4.978 |
a. What is the sample
| Mean | (to 4 decimals) |
| Standard deviation | (to 4 decimals) |
b. Develop a 95% confidence interval for the population mean years to maturity. Round the answer to four decimal places.
c. What is the sample mean yield on corporate bonds and what is the sample standard deviation?
| Mean | (to 4 decimals) |
| Standard deviation | (to 4 decimals) |
d. Develop a 95% confidence interval for the population mean yield on corporate bonds. Round the answer to four decimal places.
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