Let be the hourly wage (excluding tips) for workers who provide hotel room service in a

Question:

Let µ be the hourly wage (excluding tips) for workers who provide hotel room service in a large city. A random sample of a number (more than 30) of such workers yielded a 95% confidence interval for µ of $8.46 to $9.86 using the normal distribution with a known population standard deviation.

a. Find the value of x̅ for this sample.

b. Find a 99% confidence interval for µ based on this sample.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...