« previous next »

Author Question: If all the points of a scatter diagram lie on the least squares regression line, then the ... (Read 58 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?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Sunset Diagram of changes in East and West from Solstice Sunset Diagram of changes in East and West from Solstice
Schematic diagram showing polyclonal response by B cells against linear epitopes. Schematic diagram showing polyclonal response by B cells against linear epitopes.
Schematic diagram of virulence factors of Helicobacter pylori. Schematic diagram of virulence factors of Helicobacter pylori.
Tai chi walk along straight line. From tai chi stance, shift weight to the back leg and turn the ... Tai chi walk along straight line. From tai chi stance, shift weight to the back leg and turn the ...
Apply vibration clockwise around abdomen with fingertips to points in a circle over the colon. Apply vibration clockwise around abdomen with fingertips to points in a circle over the colon.
Number line for rounding Number line for rounding
Video: Factors that influence muscle tension - Sarcomere length and force, understretched and overstretched

For a complete list of videos, visit our video library