When two population variances are ____________________ we estimate each population variance with its sample variance.The test statistic of 
is approximately Student t-distributed with n1 + n2 - 2 degrees of freedom.
Definitions:
Claim
A statement asserting something to be true, often requiring supporting evidence or argument.
Specific Explanation
A detailed and explicit description or clarification of a subject or concept, leaving little to no room for ambiguity or misunderstanding.
Routine Messages
Communications that are part of the normal day-to-day operations in a business or organization, often standardized and dealing with regular activities.
Business Tone
The professional and formal manner of communication used in business environments.
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