« previous next »

Author Question: If there is a positive correlation between X and Y then in the regression equation, Y = bX + a, ... (Read 60 times)

segrsyd

  • Hero Member
  • *****
  • Posts: 530
on: Jun 20, 2018
If there is a positive correlation between X and Y then in the regression equation, Y = bX + a, ____.
 
  A) b > 0
  B) b < 0
  C) a > 0
  D) a < 0

Question 2

A sample of n = 25 individuals is selected from a population with  = 80 and a treatment is administered to the sample. What is expected if the treatment has no effect?
 
  A) The sample mean should be very different from 80 and should lead you to reject the null hypothesis.
  B) The sample mean should be very different from 80 and should lead you to fail to reject the null hypothesis.
  C) The sample mean should be close to 80 and should lead you to reject the null hypothesis.
  D) The sample mean should be close 80 and should lead you to fail to reject the null hypothesis.


sokh

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Jun 20, 2018
Answer to Question 1

A

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Nonverbal communications convey strong, powerful messages that may be negative or positive. Nonverbal communications convey strong, powerful messages that may be negative or positive.
Number of positive, negative, and neutral images recalled by younger, middle-age, and older adults. ... Number of positive, negative, and neutral images recalled by younger, middle-age, and older adults. ...
Alcoholic fermentation Chemical Equation Alcoholic fermentation Chemical Equation
Negative and positive feedback loops Negative and positive feedback loops
Simplify Exponential Equation Simplify Exponential Equation
Find the equation of the normal line to f(x)=sinx+cosx at x = π. Find the equation of the normal line to f(x)=sinx+cosx at x = π.
Video: Gastroesophageal Reflux Disease (GERD)

For a complete list of videos, visit our video library