Say a regression equation if fit to data, and the correlation coefficient estimate ,R ,between X and Y is 0.5. State if true or false. a. The slope of the regression line is 0.5. b. The regression model with X explains 50% of the variation in Y , c. 25% of the variation in Y is explained by X. d. 50% of the variation in Y is explained by X. e. X is positively associated with Y . f. Even if X and Y have a non linear relationship, the value of 0.5 can be used to measure the association between X and Y.

Rai compares two cable plans from different companies. which equation gives the correct value of mm, the number of months for which plans a and b cost the same?

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.