« previous next »

Author Question: A teacher records the test scores for the 40 students in her class. Corresponding to each score, she ... (Read 118 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?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Allen Test: An occluded ulnar artery results in continued pallor of the hand while the radial artery Allen Test: An occluded ulnar artery results in continued pallor of the hand while the radial artery
Knee Reflex Test Knee Reflex Test
A Mono-Diff test in which the presumptive well contains the patient's serum mixed with ... A Mono-Diff test in which the presumptive well contains the patient's serum mixed with ...
Benedict's test results Benedict's test results
Exhaust Restriction Test Exhaust Restriction Test
The Turing Test The Turing Test
Video: Mechanism of enzyme action

For a complete list of videos, visit our video library