In constructing a 95% confidence interval estimate for the difference between the means of two normally distributed populations, where the unknown population variances are assumed not to be equal, summary statistics computed from two independent samples are: 
, 
, 
, 
, 
, and 
. The upper confidence limit is:
Definitions:
Work-Life Balance
The equilibrium between personal life and occupational responsibilities, where neither overshadows the other, leading to a sense of satisfaction in both areas.
Voluntary Certification
A process where individuals or organizations choose to undergo an evaluation to obtain a certification, indicating they meet specific standards or qualifications, without any legal obligation.
Ontario
A province in Canada known for its natural diversity, economic industries, and being home to the nation's capital, Ottawa, and its largest city, Toronto.
Alberta
A province in Western Canada, known for its natural beauty, including mountains, forests, and prairies.
Q49: If a process is in control, we
Q57: In most processes, the process control limits
Q106: Continuous random variables can assume infinitely many
Q128: One way to reduce the margin of
Q159: Given that Z is a standard normal
Q176: Which of the following is true about
Q177: Two independent samples are selected at random
Q182: When the necessary conditions are met, a
Q186: In making inferences about a population mean
Q202: For a t-distribution with 12 degrees of