Multiple Choice
In large-sample statistical tests about the population mean , instead of using
directly as the test statistic, it is common practice to use:
A) , if σ is known
B) , if s is known
C) , if β is known
D) both , if σ is known and
, if s is known
E) neither , if σ is known nor
, if s is known
Correct Answer:

Verified
Correct Answer:
Verified
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