Katherine's opportunity cost of attending the lecture is: the transportation and time cost of getting to the lecture event itself plus the reduction in her physics exam grade by not studying tonight.
<u>Explanation</u>:
The opportunity cost is the "cost" lost by not enjoying the benefit associated with the chosen alternative choice. People usually make use of opportunities to make themselves better.
The opportunity cost can be explained as giving up of profit or value to achieve something else. Opportunity cost is the value of giving up the best thing whenever you make a decision. When Katherine decided to attend the lecture of her favorite author, she lost her time, transportation cost and even scored low grade in physics exam as didn’t study on exam night.
Answer:
A population-D
Explanation:
A population is referred to a large collection of individuals or objects that is the main focus of an experiment or scientific research query. It is also called A research population because it considers a defined collection of individuals or objects who have similar binding characteristics.
Professor DeVries randomly selected and interviewed 50 of the school's students of Oakbridge School. He is using a well defined collection of student with same characteristic ie same school . His study is using a Population. Note that "random" here implies a subset of a population.
The rise of organized baseball after the Civil War led to early attempts to segregate the sport. The National Association of Amateur Base Ball Players rejected African-American membership in 1867, and in 1876,
owners of the professional National League adopted a “gentleman’s agreement” to keep blacks out. Subsequent African.
The balance of power is needed for the congress to check and balance the executive.
<h3>What is the balance of power?</h3>
The Federalist Papers No. 70 (1788) argued that the executive should be very strong so as to take actions needed to protect the nation. This means the executive branch needs power the most.
The legislative power is vested in Congress. The congress is meant to check and balance the executive.
Find out more on power at: brainly.com/question/337956
