What is the sample mean years to maturity for corporate bonds and what is the sample standard deviation?

The purpose of this assignment is to compute confidence intervals when population standard deviation is unknown.1. Get the datafile named “CorporateBonds” (attached).2. What is the sample mean years to maturity for corporate bonds and what is the sample standard deviation?3. Develop a 95% confidence interval for the population mean years to maturity.4. What is the sample mean yield on corporate bonds and what is the sample standard deviation?5. Develop a 95% confidence interval for the population mean yield on corporate bonds.