A random sample of 25 people employed by the florida state authority established they earned an average wage( including benefits ) of $65.00 per hour
a. what is the popular mean? what is the best estimate of the population mean ?
b.develop a 99% confidence interval for the population mean wage ( including benefits ) for this employees
c. how large a sample is needed to assess the population mean with an allowable error of $ 1.00 and 95% confidence?