_______________ is the basic minimum _______________ that must be ...

[Zulu123]

_______________ is the basic minimum _______________ that must be present in an experiment before any conclusion about treatment effects can be made.
 a. External validity, validity c. External reliability, reliability
  b. Internal validity, validity d. Internal reliability, reliability

Question 2

A confidence range is a specified range of numbers within which a population mean is expected to lie.
 
 Indicate whether the statement is true or false

[todom5090]

Answer to Question 1

B
Without internal validity, the experiment is confounded and largely useless for the purpose of causal inference.

Answer to Question 2

F
A confidence interval estimate is a specified range of numbers within which a population mean is expected to lie.

[Zulu123]

Great answer, keep it coming

[scottmt]

Thanks for the timely response, appreciate it