Explanations not required, Answers will do. Thank you.

1. A downward sloping pattern in the scatter plot for a set of data implies that a. there is positive linear relationship between the two variables. b. when the independent variable increases, the dependent variable decreases. c. when the independent variable increases, the dependent variable increases. d. there is no relationship between the two variables.

2. The following regression model has been computed based on a sample of 36 observations: = 124.2 + 45.3x.

Given this model, the predicted value for y when x = 40 is 1,812 1,726 1,936 2,103 3.

For the following hypothesis: Ho : u s 56 HA : u > 56 With n = 20, x = 60.2, s = 6.9, a = 0.1, and critical value of 1.33, state the decision of the test. O Reject the null hypothesis as the test value is more than the critical value. O Do not reject the null hypothesis as the test value falls in the non-critical region. O Do not reject the null hypothesis as the test value is in the critical region. O Reject the null hypothesis as the test value does not fall in the critical region