Researchers are comparing the intelligence levels of incoming freshmen and graduating seniors. Assuming that there is not a systematic difference in intelligence levels between the two groups and researchers reject the null hypothesis, they have committed:

Type 1 error

Explanation:

In statistics and research, a type 1 error results when a researcher rejects a true null hypothesis and accepts the alternate hypothesis instead.

From this question let's say the null hypothesis is there is no systematic difference between two groups

And the alternate says there is systematic difference between two groups.

We commit a type 1 error when we reject the null hypothesis which is correct and accept the alternate hypothesis which is false.

trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.

your answer is rising unemployment and inflation.