The percentage of high school graduates applying to multiple colleges has been increasing over the past several years. According to an association in a certain region, 41% of high school students applied to six or more colleges in 2015. A random sample of 374 high school graduates in 2018 was selected and 157 of them applied to six or more colleges. Complete parts a through c. a. Construct a 90% confidence interval to estimate the actual proportion of high school graduates that applied to six or more colleges in 2018. The confidence interval has a lower limit of and an upper limit of (Round to three decimal places as needed.) b. What is the margin of error for this sample? The margin of error is (Round to three decimal places as needed.) c. Is there evidence that this proportion has changed since 2015 based on this sample? This sample evidence that this proportion has changed since 2015, since the
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
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