Author Question: If all the points of a scatter diagram lie on the least squares regression line, then the ... (Read 102 times)

aabwk4

  • Hero Member
  • *****
  • Posts: 593
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
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

wergv

  • Sr. Member
  • ****
  • Posts: 365

 

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

For a complete list of videos, visit our video library