« previous next »

Author Question: If all the points of a scatter diagram lie on the least squares regression line, then the ... (Read 73 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?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Block Diagram of a Dual-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid Seme Block Diagram of a Dual-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid Seme
Apply thumb pressure to points along the spine bilaterally from superior or inferior. Keep your ... Apply thumb pressure to points along the spine bilaterally from superior or inferior. Keep your ...
A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ... A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ...
Diagram illustrating the difficulty encountered during the replication of the ends of linear chromos Diagram illustrating the difficulty encountered during the replication of the ends of linear chromos
plant diagram plant diagram
Video: Chronology of leptin research (A history of leptin research)

For a complete list of videos, visit our video library