Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
QUESTION
A random sample of 81 group leaders and supervisors revealed that they worked an average of 6.55 years before being promoted. The population standard...
A random sample of 81 group leaders and supervisors revealed that they worked an average of 6.55 years before being promoted. The population standard deviation was 1.68 years. Using the 99% degree of confidence, what is the confidence interval for the population mean
