Scientists often repeat experiments multiple times. why is this important?

Scenario: the economy of country y has been in an economic downturn for the last several months. recently, businesses have invested in new technologies in order to produce the goods that consumers are demanding within the nation's own borders. the government has removed regulations to allow producers and consumers to have more financial freedom. as a result, consumer spending has increased and the economy has begun to improve. use the drop-down menus to complete the sentences. according to the information presented about country y, the classical economic concept of ( the invisible hand, consumer efficiency, government regulations) can be seen. the economic events of country y demonstrate the idea of laissez faire because the government (did, did not) intervene in economic events.

Arecent poll of 500 residents in a large town found that only 36% were in favor of a proposed referendum to build a new high school. find the margin of error for this poll if we want 95% confidence in our estimate of the percentage of residents in favor of this proposed referendum.

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.