Try this problem to see if you understand the concepts we just studied. The answer can be found at the end of the Portfolio section. Solve the inequality − 2 ( x − 5 ) ≥ x − 8 − 5 x .
Try this problem to see if you understand the concepts we just studied. The answer can be found at the end of the Portfolio section. Solve the inequality − 2 ( x − 5 ) ≥ x − 8 − 5 x .
Solution Summary: The author explains how to calculate the solution of the provided inequality by multiplying the same non-zero number or expression on both sides.
The table below indicates the number of years of experience of a sample of employees who work on a particular production line and the corresponding number of units of a good that each employee produced last month.
Years of Experience (x)
Number of Goods (y)
11
63
5
57
1
48
4
54
5
45
3
51
Q.1.1 By completing the table below and then applying the relevant formulae, determine the line of best fit for this bivariate data set.
Do NOT change the units for the variables.
X
y
X2
xy
Ex=
Ey=
EX2
EXY=
Q.1.2 Estimate the number of units of the good that would have been produced last month by an employee with 8 years of experience.
Q.1.3 Using your calculator, determine the coefficient of correlation for the data set.
Interpret your answer.
Q.1.4 Compute the coefficient of determination for the data set.
Interpret your answer.
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