Author Question: A teacher records the test scores for the 40 students in her class. Corresponding to each score, she ... (Read 81 times)

sdfghj

  • Hero Member
  • *****
  • Posts: 552
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
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
 

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

For a complete list of videos, visit our video library