Sx = 19, Sy = 25, and sxy= 118.55 a-1. Calculate the sample correlation coefficient rxy. (Round your answer to 4 decimal places.) Sample correlation coefficient a-2. Interpret the sample correlation coefficient ry. The correlation coefficient indicates a positive linear relationship. The correlation coefficient indicates a negative linear relationship. The correlation coefficient indicates no linear relationship. b. Specify the hypotheses to determine whether the population correlation coefficient is positive. Ho: Pxy 0; HA: Pxy 0 Ho: Pxy 2 0; HẠ: Pxy < 0 Ho: Pay s 0; HA: Pay > 0 c-1. Calculate the value of the test statistic. (Round intermediate calculations to at leas decimal places and final answer to 3 decimal places.) Test statistic c-2. Find the p-value. O0.05 s p-value < 0.10 O.025 s p-value < 0.05 Q.01 s p-value < 0.025 p-value 2 0.10 Op-value < 0.01 d. At the 5% significance level, what is the conclusion to the test? OReject Ho: we can state the population correlation is positive. Reject Ho: we cannot state the population correlation is positive. Do not reject Ho: we can state the population correlation is positive. Do not reject Ho; we cannot state the population correlation is positive.

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Family of Curves

A family of curves is a group of curves that are each described by a parametrization in which one or more variables are parameters. In general, the parameters have more complexity on the assembly of the curve than an ordinary linear transformation. These families appear commonly in the solution of differential equations. When a constant of integration is added, it is normally modified algebraically until it no longer replicates a plain linear transformation. The order of a differential equation depends on how many uncertain variables appear in the corresponding curve. The order of the differential equation acquired is two if two unknown variables exist in an equation belonging to this family.

XZ Plane

In order to understand XZ plane, it's helpful to understand two-dimensional and three-dimensional spaces. To plot a point on a plane, two numbers are needed, and these two numbers in the plane can be represented as an ordered pair (a,b) where a and b are real numbers and a is the horizontal coordinate and b is the vertical coordinate. This type of plane is called two-dimensional and it contains two perpendicular axes, the horizontal axis, and the vertical axis.  

Euclidean Geometry

Geometry is the branch of mathematics that deals with flat surfaces like lines, angles, points, two-dimensional figures, etc. In Euclidean geometry, one studies the geometrical shapes that rely on different theorems and axioms. This (pure mathematics) geometry was introduced by the Greek mathematician Euclid, and that is why it is called Euclidean geometry. Euclid explained this in his book named 'elements'. Euclid's method in Euclidean geometry involves handling a small group of innately captivate axioms and incorporating many of these other propositions. The elements written by Euclid are the fundamentals for the study of geometry from a modern mathematical perspective. Elements comprise Euclidean theories, postulates, axioms, construction, and mathematical proofs of propositions.

Lines and Angles

In a two-dimensional plane, a line is simply a figure that joins two points. Usually, lines are used for presenting objects that are straight in shape and have minimal depth or width.