A random sample of 23 people employed by the Florida state authority established they earned an average wage (including benefits) of $63 per hour. The sample standard deviation was $6.1 per hour.
(a) What is your best estimate of the population mean?
Estimated population mean $
(b) Develop a 99% confidence interval for the population mean wage (including benefits) for these employees. (Round your answers to 2 decimal places.)
Confidence interval for the population mean wage is between____ and_____ .
(c) How large a sample is needed to assess the population mean with an allowable error of $1.00 at 90% confidence? (Round up your answer to the next whole number.)
Sample size