Answer:
language
Explanation:
Since it is showing all different languages
Answer:
Simple Random Sampling
Explanation:
Sampling is the process of drawing a small group of representative people from population.
Random Sampling is when all the units of population have equal chance of being chosen as a sample.
Simple Random sampling is choosing a subset randomly from the entire set.
Researcher recruiting participants for experiment by posting announcement in psychology department, asking for volunteers. It is a simple random sampling as sample is randomly drawn by invitation to volunteer from the population of all people in psychological department.
The correct answer is coupons and comparative shopping.
Coupons are commodities that give consumers a saving on the purchase of an item(s) at particular stores. These coupons help individuals to save money. Comparative shopping works in a similar way. However, instead of having a physical coupon to show, consumers can compare prices of goods from different stores using resources like newspaper advertisements or online databases.
Opportunity costs and marginal benefits have nothing to do with saving money. Rather, these deal with other economic principles like choosing between different options and the additional satisfication that a person gets from consuming more of a good.
