question 1:

The following sample observations were randomly select:

X: 4 5 3 6 10

Y: 4 6 5 7 7

a)Determine the regression equation.

b)Determine the value of Y when X is 7.

question 2 :

The production department of Celltronics International wants to explore the relationship between the number of employees who assemble a subassembly and the number produced. As an experiment, two employees were assigned to assemble the subassemblies. They produced 15 during a one-hour period. Then four employees assembled them. They produced 25 during a one-hour period. Thecomplete set of paired observations follows:

number of assemblers one- hour production(units)

2 15

4 25

1 10

5 40

3 30

a. What is the dependent and independent variable?

b. Draw a scatter diagram.

c. Determine the correlation coefficient.

d. Determine the strong between two variables.