Answer: Wendy did not use random assignment
Explanation: Wendy's failure to randomly assign participants or subject to his research will pose a threat to the internal validity of his study. The internal validity of a study simply refers to the structure of an experiment and it's trustworthiness in establishing causal relationship between the applied treatment used a study and the observed outcome. Wendy's decision to ignore random assignment and opt for a manual assignment of subject to each treatment will pose a threat to the structure of his study and hence the establishment of a causal relationship between the treatment t and outcome of the study.
So far I think they are correct tell me if I am wrong please.
<span>An idea for a bill may come from anybody, however only Members of Congress can introduce a bill in Congress. Bills can be introduced at any time the House is in session.<span>There are four basic types of legislation: bills; joint resolutions; concurrent resolutions; and simple resolutions.</span></span>
