The correct answer is a) Dr. Wong could publish his data in a scientific journal and have different investigators try to reproduce his results. This is due to external validity, when data from a research can be confirm and reproduced, after selecting a proper sample size and determine alfa and beta power, for the study. If no bias exists, other researchers should be able to replicate and validate Dr’s Wong Results.
B and C options are both unacceptable due to ethical issues, and D is incorrect based on the central limit theorem; if Dr’s Wong sample is at least 30 in number (for each group: A=test group and B=control group) the statistical inferences can be translated into larger populations. Smaller samples than this, are not recommended due to bias and internal validity.
Depressive disorders or mood disorders
Answer:
The Mandate of Heaven is lost when a ruler behaves unfairly. If the ruler fails to follow the principles applied to the Mandate of Heaven, he loses the Mandate. By not ruling “righteously and circumspectly,” the ruler loses the Mandate. It is officially lost when the ruler fails miserably and completely and is overthrown.
Explanation:
Http://www.history.org/Almanack/life/religion/religionrev.cfm I hope this helps