The Principal at John F

question 4

Essay

The principal at John F. Kennedy High School has been asked to provide the average number of classes taken by the students at KHS. Since the computer system is down, she takes her alphabetized list of students, randomly selects 50 students, determines the number of classes each of the 50 selected students is taking, and calculates . She then reports to the PTA "Since I took a large random sample, the population mean number of classes taken by the students at KHS is 5.4." Write a short paragraph to send to her that explains why her statement is not correct.

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Definitions:

Ronald Reagan

The 40th President of the United States, serving from 1981 to 1989, known for his economic policies known as "Reaganomics".

Marginal Tax Rate

The rate at which the last dollar of income is taxed, indicating the proportion of any additional dollar of income that will be taken as tax.

Lump-Sum Tax

A tax that is a fixed amount, not dependent on the taxpayer's income level or assets' value.

Average Tax Rate

The fraction of total income that is paid in taxes, calculated by dividing the total taxes paid by the total taxable income.