« previous next »

Author Question: If there is a positive correlation between X and Y then in the regression equation, Y = bX + a, ... (Read 73 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?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

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

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

A positive feedback loop. A positive feedback loop.
How to find the equation of a right bisector How to find the equation of a right bisector
The cell wall of a Gram-positive bacterium, S. aureus The cell wall of a Gram-positive bacterium, S. aureus
Finding the equation of a line Finding the equation of a line
Write a net ionic equation for the precipitation reaction that occurs. Write a net ionic equation for the precipitation reaction that occurs.
Differential Equation Word Problem Differential Equation Word Problem
Video: Types of Transport - Uniport, Antiport and Symport (Glucose and Na+K+ Transporters)

For a complete list of videos, visit our video library