« previous next »

Author Question: If all the points of a scatter diagram lie on the least squares regression line, then the ... (Read 72 times)

aabwk4

  • Hero Member
  • *****
  • Posts: 593
on: Jun 24, 2018
If all the points of a scatter diagram lie on the least squares regression line, then the coefficient of determination for these variables based on these data
 a. is 0.
  b. is 1.
  c. is either 1 or -1, depending upon whether the relationship is positive or negative.
  d. could be any value between -1 and 1.

Question 2

The salaries at a corporation are normally distributed with an average salary of 19,000 and a standard deviation of 4,000.
 a. What is the probability that an employee will have a salary between 12,520 and 13,480?
  b. What is the probability that an employee will have a salary more than 11,880?
  c. What is the probability that an employee will have a salary less than 28,440?


wergv

  • Sr. Member
  • ****
  • Posts: 365
Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

a. 0.0312
b. 0.9625
c. 0.9909


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

aabwk4

  • Hero Member
  • *****
  • Posts: 593
Reply #2 on: Jun 24, 2018
Thank you :)


wergv

  • Sr. Member
  • ****
  • Posts: 365
Reply #3 on: Jun 24, 2018
Happy to help you


« previous next »
 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Mitosis + Check Points 3 of 5 Mitosis + Check Points 3 of 5
Anatomy Diagram Of Human Body Anatomy Diagram Of Human Body
Structure of the H-R Diagram Structure of the H-R Diagram
Schematic diagram showing polyclonal response by B cells against linear epitopes. Schematic diagram showing polyclonal response by B cells against linear epitopes.
Finding the equation of a line Finding the equation of a line
The genome of a typical retrovirus is shown at the top of the diagram The genome of a typical retrovirus is shown at the top of the diagram
Video: Mitochondrial Structure & ETC Protein Complexes (Protein Complexes and Electron Transport)

For a complete list of videos, visit our video library