A professor wanted to compare two types of teaching styles. One type is by tutorials and the other is giving a lecture. It is a common belief that tutorials result in better retention. This belief is tested by having 10 students learn a topic by each method and then having them take a test on their knowledge of the material that was covered. Them take a test on their knowledge of the material that was covered. A coin flip was used to determine which type of teaching method a student would be given firstteaching method a student would be given first. Results indicated that there was no difference in the two types of presentationpresentation.

The following are the answer to this question:

Explanation:

In the given question the correct choice is missing, that can be defined as follows:

In option A, It uses the development of matched-pairs.

In option B, In the score ranking, it uses the test score for both the test.

In option C, This type of variable is the form of presentation, which allows you a treatment, which consists of lectures thru lectures as well as a presentation offering a lesson.

In option D, The answer is students.

In option E, It is used to eradicate prejudice concerning which communication demonstration was first used.

the correct answer is economics is a game without winners or losers.

unlike sports or games economic is a game without losers or winner rather it is a game where everyone wins. parties of business doing businesses exchange money with each other and hence exchange is done on the basis of goods. one party takes the goods and other sales it so there is winner on both sides. each party values more highly the good it gets than the good it gives up. both sides exchange only because both intend to increase their value. so there is no concept of lose or win.

i think the answer is a. science center.