Answer:
Vectors are usually described in terms of their components in a coordinate system. Even in everyday life we naturally invoke the concept of orthogonal projections in a rectangular coordinate system. For example, if you ask someone for directions to a particular location, you will more likely be told to go 40 km east and 30 km north than 50 km in the direction 37° north of east.
In a rectangular (Cartesian) xy-coordinate system in a plane, a point in a plane is described by a pair of coordinates (x, y). In a similar fashion, a vector
→
A
in a plane is described by a pair of its vector coordinates. The x-coordinate of vector
→
A
is called its x-component and the y-coordinate of vector
→
A
is called its y-component. The vector x-component is a vector denoted by
→
A
x. The vector y-component is a vector denoted by
→
A
y. In the Cartesian system, the x and y vector components of a vector are the orthogonal projections of this vector onto the x– and y-axes, respectively. In this way, following the parallelogram rule for vector addition, each vector on a Cartesian plane can be expressed as the vector sum of its vector components:
Step-by-step explanation:
The correct statement that can be made about the means is a. There is not enough evidence to suggest that the means are different.
<h3>What is true about the means?</h3><h3 />
Given that α = 0.01, we can use an ANOVA analysis to determine the p-value of the means.
When we run the means through an ANOVA software, the p-value can be found to be 0.1142.
This figure is greater than α = 0.01.
This means that we do not have the evidence to reject the null hypothesis that the means are different.
Options for this question:
- a. There is not enough evidence to suggest that the means are different.
- b. The mean age of middle school teachers is different from the mean age of high school teachers.
- c. The mean age of middle school teachers is different from the mean age of college teachers.
- d. The mean age of high school teachers is different from the mean age of college teachers.
Find out more on the p-value at brainly.com/question/4621112
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