I believe the answer is: exports minus imports ; ALL
Gross domestic product is calculated to measure one country's productivity within one year. Imports are considered other country's productivity, so it need to be deducted from the exports.
Total output is used as a factor to calculate GDP. It measures all goods or services that created by legal citizens in the country.
Answer:
double-blind study
Explanation:
According to my research on different experimental procedures, I can say that based on the information provided within the question the procedure that is being defined in the question is called a double-blind study. This (like defined in the question) is a study in which neither the participants nor the experimenters know who is receiving a particular treatment.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.