« previous next »

Author Question: A teacher records the test scores for the 40 students in her class. Corresponding to each score, she ... (Read 119 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?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

The Allen Test: Pallor is initiated by compressing the radial and ulnar arteries with the fist clenc The Allen Test: Pallor is initiated by compressing the radial and ulnar arteries with the fist clenc
Triceps Reflex Test Triceps Reflex Test
At breakfast, a middle-class husband sits absorbed in the newspaper and the public affairs of the da At breakfast, a middle-class husband sits absorbed in the newspaper and the public affairs of the da
Test for Depressive Symptoms: CED Scale Test for Depressive Symptoms: CED Scale
The paper test involves holding a piece of paper near the tailpipe of an idling engine. A good ... The paper test involves holding a piece of paper near the tailpipe of an idling engine. A good ...
A car wash reduced the price of a basic wash as a promotion and test of the market. With the ... A car wash reduced the price of a basic wash as a promotion and test of the market. With the ...
Video: Body plan of euglena Animation

For a complete list of videos, visit our video library