17. The equation of the regression line used in statistics is

A. x = a +by

B. y = bx +a

C. y' = a + bx

D. x = ay +b

18. The coefficient of determination is

A. r

B. r^2

C. a

D. b

19. When the alternative hypothesis in a statistical decision experiment utilizes the less than ("<") inequality sign, which of the following is FALSE?

A. The hypothesis test is left-tailed.

B. The expected sign of the test statistic is negative.

C. There are two critical t-values.

D. The critical value is to the left of the axis of symmetry of the distribution.

20. Which among the following variables is likely to be a dependent variable?

A. Different types of teaching styles

B. The final exam scores for ESM 2035

C. Hours of sleep

D. Number of cups of coffee drank