In 2009, Forty Percent of the Students at a Major

question 39

Essay

In 2009, forty percent of the students at a major university were Business majors, 35% were Engineering majors and the rest of the students were majoring in other fields. In a sample of 600 students from the same university taken in 2010, two hundred were Business majors, 220 were Engineering majors and the remaining students in the sample were majoring in other fields. At 95% confidence, test to see if there has been a significant change in the proportions between 2009 and 2010.

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Definitions:

Balanced Equation

A chemical equation in which the number of atoms for each element in the reaction and the total charge are the same on the reactants side and the products side.

HCl

Hydrochloric acid, a strong corrosive acid that is a colorless or slightly yellow liquid when pure.

Balanced Equation

A chemical equation where the number of atoms for each element, and the total charge, are the same on both the reactants and products sides.

Fe2O3

Iron(III) oxide, a reddish-brown solid also known as rust, used in various applications such as painting and in the synthesis of iron.