Worksheet #4: Paired T-test A teacher is interested to know if the Student Before After 24 26 new learning program will have an effect to 17 24 the number of correct remembered words. 3. 32 31 15 students learn a list of 50 words. Learning performance is measured using a recall test. After the first test, all students are instructed 14 17 16 17 22 25 7. 26 25 how to use the learning program and then learn a second list of 50 words. Learning performance is again measured with the recall test. In the following table the number 8. 19 24 19 22 10 22 23 11 21 26 of correct remembered words are listed for 12 25 28 both tests. Use 0.05 level of significance and assume normality in the population. 13 16 19 14 24 23 15 18 22
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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