« previous next »

Author Question: With a paired t, a significant correlation has the effect of reducing the value of the estimated ... (Read 41 times)

Arii_bell

  • Hero Member
  • *****
  • Posts: 596
on: Jun 20, 2018
With a paired t, a significant correlation has the effect of reducing the
  value of the estimated standard error of difference.
 
  Indicate whether the statement is true or false

Question 2

A researcher selects a pair of random samples and predicts beforehand
  that Group 2 will score higher than Group 1. The scores in Group 1 are 11, 10,
  8, 3, 7, 1. The scores in Group 2 are 12, 11, 8, 4, 9, 2.
 
  a. Find the t ratio
  b. As a one-tail t, should Ho be rejected?
   If rejected, state the probability of the alpha error.
  c. Do the two groups represent a single population?


atrochim

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jun 20, 2018
Answer to Question 1

T

Answer to Question 2

a t=-0.441


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Arii_bell

  • Hero Member
  • *****
  • Posts: 596
Reply #2 on: Jun 20, 2018
Thank you


atrochim

  • Sr. Member
  • ****
  • Posts: 331
Reply #3 on: Jun 20, 2018
No problem :)


« previous next »
 

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

The inheritance of snail coiling direction as an example of a maternal effect gene. The inheritance of snail coiling direction as an example of a maternal effect gene.
Effect of Atmospheric Stability Effect of Atmospheric Stability
Effect of extreme homoallostery Effect of extreme homoallostery
The enhanced greenhouse effect The enhanced greenhouse effect
The First-Pass Effect The First-Pass Effect
The effect of disruptive selection on bristle number in Drosophila The effect of disruptive selection on bristle number in Drosophila
Video: Transmission Across a Synapse

For a complete list of videos, visit our video library