THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 78

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A college administers for all its courses a student evaluation questionnaire.For a random sample 12 courses the accompanying table shows both the average student ratings of the instructor (on a scale from 1 to 5),and the average expected grades of the students (on a scale from 0 to 4).

-Calculate the sample correlation coefficient between instructor ratings and expected grades.

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Definitions:

Acetaminophen (Tylenol)

A medication used to reduce fever and relieve pain, widely available over-the-counter and considered safer than nonsteroidal anti-inflammatory drugs for most people.

Medical Asepsis

Practices in healthcare designed to reduce the number and spread of pathogens and protect patients from infection, such as hand hygiene and sterilization of instruments.

Antibacterial Soap

Soap that contains chemical agents designed to kill bacteria and other pathogens, aiming to reduce or prevent infection.

Virus

A microscopic infectious agent that replicates only inside the living cells of an organism, leading to various diseases.