This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A college lecturer has devised a new method of teaching a particular mathematical concept and wishes ... (Read 59 times)

chandani

  • Hero Member
  • *****
  • Posts: 541
on: Jul 25, 2018
A college lecturer has devised a new method of teaching a particular mathematical concept and wishes to try out this teaching method on a representative sample of his students.
 
  There are 76 students in his class and he wishes to obtain a simple random sample of 25 of them. Describe a method he could use to obtain the sample.

Question 2

A study was conducted to determine if listening to heavy metal music affects critical thinking. To test the claim, 136 subjects were randomly assigned to two groups. Both groups were administered a basic math skills exam.
 
  The first group took the exam while heavy metal music was piped into the exam room, while the second group took the exam in a silent room. The mean exam score for the first group was 77, and the mean exam score for the second group was 91. The researchers concluded that heavy metal music negatively affects critical thinking. Identify (a) the research objective, (b) the sample, (c) the descriptive statistics, and (d) the conclusions made in the study.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jadwiga9

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 25, 2018
Answer to Question 1

Answers will vary. Possible answer: List the students' names alphabetically and assign them numbers 1 to 76 according to this list. Use a random number table to construct a list of 25 random numbers between 1 and 76 and select the students corresponding to those numbers.

Answer to Question 2

(a) if listening to heavy metal music affects critical thinking
(b) the 136 subjects
(c) the mean exam score for the first group = 77, and the mean exam score for the second group was 91
(d) that heavy metal music negatively affects critical thinking


chandani

  • Member
  • Posts: 541
Reply 2 on: Jul 25, 2018
Great answer, keep it coming :)

tkempin

  • Member
  • Posts: 332
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Palade's use of the pulse-chase method to study protein secretion Palade's use of the pulse-chase method to study protein secretion
Appropriate teaching methods Appropriate teaching methods
Mathematical Rules and Guidelines Mathematical Rules and Guidelines
College and university attendance is associated with developmental advances College and university attendance is associated with developmental advances
Computer-automated DNA sequencing using the chain-termination (Sanger) method Computer-automated DNA sequencing using the chain-termination (Sanger) method
Offset Method Plot of Land with Measurements Offset Method Plot of Land with Measurements
Video: How does asthma work?And How do you treat asthma?

For a complete list of videos, visit our video library