« previous next »

Author Question: A teacher records the test scores for the 40 students in her class. Corresponding to each score, she ... (Read 127 times)

sdfghj

  • Hero Member
  • *****
  • Posts: 552
on: Jul 25, 2018
A teacher records the test scores for the 40 students in her class. Corresponding to each score, she calculates a z-score. Julia's z-score is -2.8. Should she be concerned? Explain your reasoning.
 
  What will be an ideal response?

Question 2

Define the terms population and sample.
 
  What will be an ideal response?


Alyson.hiatt@yahoo.com

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 25, 2018
Answer to Question 1

Answers will vary. Possible answer: Yes. Almost all z-scores lie between -3 and 3 so a z-score of -2.8 indicates that Julia's test score was lower than almost all of the other scores.

Answer to Question 2

A population is the complete collection of all individuals or items under consideration in a statistical study. A sample is that part of the population from which information is obtained.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

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.

A leech, a member of the class Hirudinea. A leech, a member of the class Hirudinea.
Cover/Uncover Test Cover/Uncover Test
Are the resutls from the glucose strip test consistent with the results obtained from the ... Are the resutls from the glucose strip test consistent with the results obtained from the ...
Calcium Channel Blockers (Class IV) and Miscellaneous Drugs for Dysrhythmias Calcium Channel Blockers (Class IV) and Miscellaneous Drugs for Dysrhythmias
A Scatterplot of the Test Scores and Average Grades of 10 Students A Scatterplot of the Test Scores and Average Grades of 10 Students
Hands-on class in a massage therapy program. Hands-on class in a massage therapy program.
Video: Major Elements in Biological Molecules: Proteins

For a complete list of videos, visit our video library