This topic contains a solution. Click here to go to the answer

Author Question: Use the data from Exhibit 6-2. If the national mean is 25, and the standard deviation is 8, who has ... (Read 62 times)

dmcintosh

  • Hero Member
  • *****
  • Posts: 517
Use the data from Exhibit 6-2. If the national mean is 25, and the standard deviation is 8, who has done better: the graduate program or the national group?
 
  What will be an ideal response?

Question 2

Using the information in Exhibit 6-2, if you want to end up with six bars on your histogram, how many numbers should be in each interval?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Andromeda18

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

ANSWER: This is a complex question. Although the national mean is higher, so is the variability. Thus, the range of scores around the mean is larger for the national group and actually dips into the lower end of the local group. In essence, the groups of scores overlap one another. Thus, it is not clear that one group has actually done better than another. If one's mean and standard deviation were both clearly higher for one of the groups, one could say that group has done better. That is not the case with these groups of scores.

Answer to Question 2

ANSWER: 4
How to figure problem: (33  12)/6 = 3.5 (rounded off to 4)




dmcintosh

  • Member
  • Posts: 517
Reply 2 on: Jul 30, 2018
Thanks for the timely response, appreciate it


Dominic

  • Member
  • Posts: 328
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

For a complete list of videos, visit our video library