To gather information about the validity of a new standardized test for 10th-grade students in a particular state, a random sample of 15 high schools was selected from the state. the new test was administered to every 10th-grade student in the selected high schools. what kind of sample is this?

A cluster sampling

Explanation:

A cluster sampling:

It is the type of sampling method in which the researcher divides the population into the subgroups that are called clusters. A simple sample of random sampling gathered from the population. The researcher work on his researcher based on the data collection from sampled clusters. This sampling is used by the researcher when cant get information about the whole population.  

It is of two type

- "ethical issues. deception – the participants actually believed they were shocking a real person and were unaware the learner was a confederate of milgram's. however, milgram argued that “illusion is used when necessary in order to set the stage for the revelation of certain difficult-to-get-at-truths.” "

- "milgram's work was conducted in the early 1960s before the current.the studies ignited a debate about the ethical treatment of participants. what appear to be dangerous, if not deadly, electric shocks and the by today's ethical standards, many questions about the research have gone unanswered."

cannabis

explanation:

(assuming this is the us) google it. law states you can't have weed.